The spatial scale and the magnitude of carbon and nitrogen translocation was examined in 5 tropical (Cymodocea serrulata, Halophila stipulacea, Halodule uninervis, Thalassodendron ciliatum, Thalassia hemprichii) and 3 temperate (Cymodocea nodosa, Posidonia oceanica, Zostera noltii) seagrass species using Carbon-13 (C-13) and Nitrogen-15 (N-15) as tracers in experiments conducted in situ. Seagrass leaf and rhizome production during the study period varied from ,0.001 to 0.015 gDW shoot-1 d-1 and 0.002 to 0.017 gDW rhizomeapex-1 d-1, respectively. Based on measured leaf and rhizome growth rates, the demand of resources for leaf production varied from 0.19 to 4.99 mgC shoot-1 d-1, and from 0.01 to 0.24 mgN shoot-1 d-1, while the demand for rhizome production varied from 0.62 to 5.57 mgC rhizome apex-1 d-1 and from 0.02 to 0.12 mgN rhizomeapex-1 d-1. Seagrass leaves incorporated the isotopes at rates ranging from 0.04 to 0.63 µg C-13 gDW-1 h-1, and ,0.01 to 0.35 µg N-15 g DW-1 h-1. After 4 d, all ...

Harvard Papers in Botany publishes monographic and floristic accounts of plants and fungi, economic and systematic botany, and relevant bibliographies.

Growth and Vegetative Development. Gunawardena, Arunika N. [1], Voicu, Laura [2], Dengler, Nancy G. [2]. Are caspases and ethylene involved in PCD-remodeling of lace place leaves?. The lace plant, Aponogeton madagascariensis, uses programmed cell death (PCD) during leaf development in a quite different way than other plants. PCD remodels the leaves of the lace plant, forming a lattice pattern of equidistantly-positioned perforations at a set time in development. Therefore, lace plant is an attractive model system for studying developmentally-regulated PCD in plants. In this system, discrete populations of cells undergo a disruption of cytoplasmic streaming and loss of anthocyanin, indicators of tonoplast rupture, as well as DNA degradation and other cytoplasmic changes such as formation of vesicles, shrinkage and invagination of the membrane, and degradation of other organelles. Concurrently, adjacent cells are unaffected by these processes and develop normally. Unlike many other forms of plant ...

Perforation formation in Aponogeton madagascariensis (Mirb.) H.Bruggen (lace plant) is an excellent model for studying developmentally regulated programmed cell death (PCD). In this study, we isolated and identified two lace plant vacuolar processing enzymes (VPEs) and investigated their involvement in PCD and throughout leaf development. Lace plant VPE transcript levels were determined during sev ...

BACKGROUND: Spirodela polyrhiza is a species of the order Alismatales, which represent the basal lineage of monocots with more ancestral features than the Poales. Its complete sequence of the mitochondrial (mt) genome could provide clues for the understanding of the evolution of mt genomes in plant. METHODS: Spirodela polyrhiza mt genome was sequenced from total genomic DNA without physical separation of chloroplast and nuclear DNA using the SOLiD platform. Using a genome copy number sensitive assembly algorithm, the mt genome was successfully assembled. Gap closure and accuracy was determined with PCR products sequenced with the dideoxy method. CONCLUSIONS: This is the most compact monocot mitochondrial genome with 228,493 bp. A total of 57 genes encode 35 known proteins, 3 ribosomal RNAs, and 19 tRNAs that recognize 15 amino acids. There are about 600 RNA editing sites predicted and three lineage specific protein-coding-gene losses. The mitochondrial genes, pseudogenes, and other hypothetical ...

BACKGROUND: Spirodela polyrhiza is a species of the order Alismatales, which represent the basal lineage of monocots with more ancestral features than the Poales. Its complete sequence of the mitochondrial (mt) genome could provide clues for the understanding of the evolution of mt genomes in plant. METHODS: Spirodela polyrhiza mt genome was sequenced from total genomic DNA without physical separation of chloroplast and nuclear DNA using the SOLiD platform. Using a genome copy number sensitive assembly algorithm, the mt genome was successfully assembled. Gap closure and accuracy was determined with PCR products sequenced with the dideoxy method. CONCLUSIONS: This is the most compact monocot mitochondrial genome with 228,493 bp. A total of 57 genes encode 35 known proteins, 3 ribosomal RNAs, and 19 tRNAs that recognize 15 amino acids. There are about 600 RNA editing sites predicted and three lineage specific protein-coding-gene losses. The mitochondrial genes, pseudogenes, and other hypothetical ...

r - i J ,I _.; . b :I .. - ! klogical Repal 85(7.25): ;* , September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A Community Profile a Minerals Management Service and Fish and Wildlife Service U.S. Department of the Interior Biological Report 85(7.25) September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A COMMUNITY PROFILE Joseph C. Zieman Rita T. Zieman Department of Environmental Sciences University of Virginia Charlottesville, VA 22903 Project Officer Edward Pendleton U.S. Fish and Wildlife Service National Wetlands Research Center 1010 Gause Boulevard Slidell, LA 70458 Conducted in Cooperation With Minerals Management Service Gulf of Mexico U.S. Department of the Interior Fish and Wildlife Service Research and Development Washington, D C 20240 DISCLAIMER The opinions and recommendations expressed in this report are those of the authors a n d d o n o t n e c e s s a r i l y r e f l e c t t h e v i e w s o f t h e U . S . F i s h a n d ...

r - i J ,I _.; . b :I .. - ! klogical Repal 85(7.25): ;* , September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A Community Profile a Minerals Management Service and Fish and Wildlife Service U.S. Department of the Interior Biological Report 85(7.25) September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A COMMUNITY PROFILE Joseph C. Zieman Rita T. Zieman Department of Environmental Sciences University of Virginia Charlottesville, VA 22903 Project Officer Edward Pendleton U.S. Fish and Wildlife Service National Wetlands Research Center 1010 Gause Boulevard Slidell, LA 70458 Conducted in Cooperation With Minerals Management Service Gulf of Mexico U.S. Department of the Interior Fish and Wildlife Service Research and Development Washington, D C 20240 DISCLAIMER The opinions and recommendations expressed in this report are those of the authors a n d d o n o t n e c e s s a r i l y r e f l e c t t h e v i e w s o f t h e U . S . F i s h a n d ...

Molecular dating was performed using a Bayesian method (Beast 1.4.8; Drummond & Rambaut 2007; see electronic supplementary material for methodological details). Two to three calibration points were specified. In each case, a normal prior was used, and its mean and standard deviations were set in such a way that 95 per cent confidence intervals corresponded to the upper and lower bounds of each calibration point. In this way, uncertainty concerning the exact dates of the calibration points could be accounted for. The age of the oldest syngnathid fossils (Monte Bolca formation, Early Eocene) (Patterson 1993; Bellwood 1996) was used as the first calibration point. These fossils date from the boundary between the Ypresian and Lutetian ages (approx. 48-50 Myr). To account for the possibility that they are younger than the origin of the family, we specified the beginning of the Eocene as an upper bound (mean = 52.2, s.d. = 2.3, 95% confidence interval: 48-56). The other two calibration points were ...

Satellite remote sensing is an advanced tool used to characterize seagrass biomass and monitor changes in clear to less-turbid waters by analyzing multi-temporal satellite images. Seagrass information was extracted from the multi-temporal satellite datasets following a two-step procedure: (i) retrieval of substrate-leaving radiances; and (ii) estimation of seagrass total aboveground biomass (STAGB). Firstly, the substrate leaving radiances is determined by compensating the water column correction of the pre-processed data because of the inherent errors associated with the geometric and radiometric fidelities including atmospheric perturbations. Secondly, the seagrass leaving radiances were correlated to the corresponding in situ STAGB to predict seagrass biomass. The relationship between STAGB and cover percentage was then established for seagrass meadows occurring in Merambong, Straits of Johor, Malaysia. By applying the above-mentioned approach on Landsat Thematic Mapper (TM) acquired in 2009 and

Seagrasses play a vital role in the survival of many marine animals, which use their meadows as habitat and feeding areas. But environmental pollution, such heavy metal, is contributing to the decline of seagrasses in some areas.. PhD candidate, Ms Nasim Shah Mohammadi from the UTS Climate Change Cluster (C3), is investigating Zostera mulleri, an endangered species of seagrass native to the southern half of Australia, and found mostly in the protected waters of NSW.. My study aims to estimate the gene diversity and resilience of the remaining Z. mulleri so as to better understand the decline of seagrass meadows in Australia, Ms Shah Mohammadi said.. All seagrasses, including Zostera muuleri, are crucial to biodiversity as they contribute organic matter to food chains and help maintain water quality by stabilising sediment.. Ms Shah Mohammadi was recently awarded a $1000 grant from the Linnean Society of NSW, which will help further her research into the molecular investigation of Z. ...

Natural disturbances, such as grazing, storms, ice-scouring, and desiccation, are an inherent part of seagrass ecosystem dynamics. Seagrasses display an extraordinarily high degree of phenotypic plasticity, adapting rapidly to changing environmental conditions.. Seagrasses are in global decline, with some 30,000 km2 (12,000 sq mi) lost during recent decades. The main cause is human disturbance, most notably eutrophication, mechanical destruction of habitat, and overfishing. Excessive input of nutrients (nitrogen, phosphorus) is directly toxic to seagrasses, but most importantly, it stimulates the growth of epiphytic and free-floating macro- and micro-algae. This weakens the sunlight, reducing the photosynthesis that nourishes the seagrass and the primary production results.. Decaying seagrass leaves and algae fuels increasing algal blooms, resulting in a positive feedback. This can cause a complete regime shift from seagrass to algal dominance. Accumulating evidence also suggests that ...

Algae live inside marine animals. Coral tissues host several million algae per square inch, and these marine plants provide 90 percent of nutrients needed by the coral. The symbiotic relationship is based on a cycle of coral enzymes which cause algae to release carbohydrates and algae to receive nitrogen from coral waste. Algae are shaded from intense sunlight by coral pigments ...

APG IV Classification: Domain: Eukaryota • (unranked): Archaeplastida • Regnum: Plantae • Cladus: angiosperms • Cladus: monocots • Ordo: Alismatales • Familia: Potamogetonaceae • Genus: Potamogeton • Species: Potamogeton spirillus ...

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My research focuses on marine ecology and fisheries science, specifically on the: (1) trophic connectivity within and between habitats in the marine environment; (2) interactions of fauna with coastal habitats, such as seagrass meadows and surf zones; and (3) fisheries interactions with the environment and management. My major focus on connectivity within and between habitats in the marine environment, seeks to understand the importance of the movement of material from one habitat to another in coastal seascapes. This program is directed towards examining the movement of nutrients via detritus from reefs to seagrass meadows and detritus from reefs and seagrass meadows to surf zones and beaches.. A large part of my research focuses on using stable isotopes as a tool for understanding ecological interactions. This has focused on: testing the assumptions of bulk stable isotopes in food web studies and comparing this approach to other biomarker tools; using novel enriched stable isotopes to test for ...

Although often overlooked, seagrasses provide coastal zones with a number of ecosystem goods and services. Seagrasses are considered ecosystem engineers.[6][3][2] This means that the plants alter the ecosystem around them. This adjusting occurs in both physical and chemical forms. Many seagrass species produce an extensive underground network of roots and rhizome which stabilizes sediment and reduces coastal erosion.[7] This system also assists in oxygenating the sediment, providing a hospitable environment for sediment-dwelling organisms.[8] Seagrasses also enhance water quality by stabilizing heavy metals, pollutants, and excess nutrients[9][3][2] The long blades of seagrasses slow the movement of water which reduces wave energy and offers further protection against coastal erosion and storm surge. Furthermore, because seagrasses are underwater plants, they produce significant amounts of oxygen which oxygenate the water column. These meadows account for more than 10% of the oceans total ...

Wells, F.E., McDonald, J.I. and Huisman, J.M. (2009) Introduced Marine Species in Western Australia. Department of Fisheries, Perth, Australia. Huisman, J.M., Abbott, I.A. and Smith, C.M. (2007) Hawaiian reef plants. University of Hawaii Sea Grant College Program, Honolulu, Hawaii. Huisman, J.M. (2006) Algae of Australia: Nemaliales. CSIRO Publishing, Collingwood, Victoria. Huisman, J., Phillips, J. and Parker, C. (2006) Marine plants of the Perth region. Department of Environment and Conservation, Kensington, Australia. Huisman, J. and Parker, C. (2005) How to collect and document marine plants. Western Australian Herbarium. Huisman, J.M. (2000) Marine plants of Australia. University of Western Australia Press in association with Australian Biological Resources Study, Nedlands, Australia. ...

They found that when boats appeared, the turtles turned tail. The arrival of harvest season saw turtle hotspots shift away from the congregated scalloping vessels and closer to the coast.. These human-driven shifts in the distribution of turtles may mean theyre spending less time in areas that are likely to be of better quality, which could in turn affect their nutritional intake and energy budgets, said study lead author Natalie Wildermann, a postdoctoral researcher at FSU. When forced to share limited space with fleets of scallop harvesters, Wildermann said, the turtles might need to expend greater effort in finding the food they need. Crowded waters could also breed increased competition among individual turtles for scarce resources. And then theres the basic environmental effects of the scalloper flotillas.. The thousands of vessels - and their oil leaks and chemicals - could have a considerable impact on the overall water and seagrass habitat in the region, Wildermann said. While a ...

This paper reviews and discusses the methods and metrics used for the assessment of the ecological status of marine angiosperms comparing the European with the South African situation. In Europe salt marsh and seagrasses are an important biological element for establishing the ecological quality status of transitional waters and in South Africa changes over time in the salt marsh and submerged mac ...

Seagrasses of Australia examines the biology, , distribution and diversity, plants and animals, threats, benefits and conservation of Seagrasses.

With high numbers of manatees using the Florida Power and Light power plant warm water refuge during winter, their impact on the seagrass beds in the Indian River Lagoon is considered an important indicator of the long-term capacity of the area to support the manatees. USGS is working with partners to investigate the spatial extent and intensity of manatee use of seagrass beds in the area. ... ...

Field and laboratory experiments were performed to investigate the palatability to predatory fishes of organic extracts of the Caribbean ascidian Didemnum conchyliatum. This tan-colored compound ascidian grows as an epibiont on seagrass blades. A dichloromethane/methanol extract of the ascidian incorporated into carrageenan food strips at the same volumetric concentration as the extract occurred in the ascidian tissues deterred feeding of a natural assemblage of consumers in the same seagrass beds from which the ascidians were collected. Bioassay-directed fractionation of this extract revealed that the deterrent property was restricted to fractions containing novel indole-maleimide-imidazole alkaloids, didemnimides A to D. Laboratory assays of purified metabolites revealed that didemnimides C and D deterred feeding by a generalist predatory reef fish, but that didemnimides A and B were not deterrent. Only didemnimide D deterred feeding in the field; neither didemnimide C nor the fraction ...

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Microenvironmental Ecology of Seagrasses:. My research has so far focussed on how seagrasses alter the biogeochemical processes and chemical conditions in their rhizosphere via release of O2 and DOC to e.g. detoxify the surrounding sediment and mobilize essential nutrients. Future research interest are aiming at resolving important seagrass/microbe interactions in the seagrass rhizosphere and leaf microenvironment to elucidate potential mutually beneficial relationships between the seagrass host and their microbial community. For further information about my research please visit: elgetti.wordpress.com. ...

Learn more about seagrasses and seagrass research at VIMS. Sort our publication list by column heading (e.g., Authors, Year, Title, Journal) or search by keyword.. ...

The majority of the stored carbon is in the soil anchoring seagrasses, where it can be several meters deep and could be storing carbon for thousands of years.... | Vertical Farm - Food Factory

Due to widespread and continuing seagrass loss, restoration attempts occur worldwide. This article presents a geospatial modeling technique that ranks the suitability of sites for restoration based on light availability and boating activity, two factors cited in global studies of seagrass loss and restoration failures. The model presented here was created for Estero Bay, Florida and is a predictive model of light availability and boating pressure to aid seagrass restoration efforts. The model is adaptive and can be parameterized for different locations and updated as additional data is collected and knowledge of how factors impact seagrass improves. Light data used for model development were collected over one year from 50 sites throughout the bay. Coupled with high resolution bathymetric data, bottom mean light availability was predicted throughout the bay. Data collection throughout the year also allowed for prediction of light variability at sites, a possible indicator of seagrass growth and ...

original description Locard, A. (1886). Prodrome de malacologie française. Catalogue général des mollusques vivants de France. Mollusque marins. ,em,i,Lyon, H. Georg & Paris, Baillière ,/i.,/em, pp. X + 778., available online at https://www.biodiversitylibrary.org/page/10831012 ...

အိုရှန်းနီးယား (အင်္ဂလိပ်: Oceania; UK: /ˌoʊʃiˈɑːniə, ˌoʊsi-/[1] သို့မဟုတ် US: /ˌoʊʃiːˈæniə/),[2] Oceanica ဟုလည်း ခေါ်ဆို[3]) ဆိုသည်မှာ ပင်လယ်သမုဒ္ဒရာများအတွင်းတွင် အသီးသီးပြန့်ကျဲနေသော ကျွန်းကြီးကျွန်းငယ်များ အသီးသီးဖြင့် ဖွဲ့စည်းထားသည့် အစုအဝေးကြီးကို ဆိုလိုသည်။ ထိုထက် တိကျစွာဆိုရလျှင် ပစိဖိတ်သမုဒ္ဒရာအတွင်းတွင် ရှိသော အင်ဒိုနီးရှား နှင့် ဩစတြေးလျ နိုင်ငံများမှ တောင်အမေရိကတိုက်ကြားရှိ ...

I took a few pictures of the community tank. I am currently supplementing the crappy, plant killing standard lighting with a 23watt CFL bulb, and dang it makes a difference for some of these plants Three of my aponogeton are blooming, the newest growth on my giant hygros is significantly better q...

Felisberto P, Jesus SM, Zabel F, et al. Acoustic monitoring of O2 production of a seagrass meadow. Journal of Experimental Marine Biology and Ecology. 2015;464:75 - 87. doi:10.1016/j.jembe.2014.12.013 ...

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Other articles where Zosteraceae is discussed: eelgrass: …marine plants of the family Zosteraceae. Found in temperate and subtropical climates around the world, these species grow in intertidal and subtidal portions of coastal areas. They provide food and habitat for a wide range of marine organisms and are important as a protective intermediary habitat for young fish before…

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B12 -- an essential vitamin for land-dwelling animals, including humans -- also turns out to be an essential ingredient for growing marine plants that are critical to the ocean food web and Earths climate, scientists have found.

|p|Aquaculture, the cultivation of freshwater and marine plants and animals, is one of the fastest-growing segments of U.S. agriculture, with sales tripling since 1987 and doubling since 1992. The latest data on the entire U.S. aquaculture industry is the

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Author: Sinyanya, Kolisa Yola Date: 2016 The Core Cape Sub-region is well known for its low nutrient, low pH soils which harbour a variety of alpha and beta- Proteobacteria associated with a diversity of legume species. Soil bacteria are important for ecological processes and are ... Read more ...

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Aponogeton madagascariensis which is known as the Madagascar Lace Plant, is one of the most highly prized plants in the hobby. Its leaves are broad and long with a very delicate lace appearance. Under the right conditions, these plants will flower regularly in the aquarium. This plant is more demanding than most, but is well worth the extra effort. Plant the Madagascar Lace Plant singly in the mid-ground part of the aquarium as a focal point. Trim any dead tips on these plants, to inhibit the entire leaf from decaying. Do not allow algae or any other debris to settle on or within the leaves. Provide a high amount of light in the range of 3 to 5 watts per gallon, using full spectrum (5000-7000K) bulbs. Reproduction with this plant occurs through bulb separation, or formation of seeds after flowering. Allow the new plant to develop a root system and immature leaves prior to separating it from the mother plant. At that time, it can then be planted in a different location. The Madagascar Lace Plant ...

Performed phytochemical study contributes to the knowledge of volatile organic compounds (VOCs) of Halopteris filicina (Grateloup) Kützing, Dictyota dichotoma (Hudson) J. V. Lamouroux, Posidonia oceanica (L.) Delile and Flabellia petiolata (Turra) Nizamuddin from the Adriatic Sea (single point collection). VOCs were investigated by headspace solid-phase microextraction (HS-SPME) and analysed by gas chromatography and mass spectrometry (GC-MS/FID). H. filicina headspace contained dimethyl sulfide (DMS; 12.8%), C8-compounds (e.g. fucoserratene (I; 9.5%)), benzaldehyde (II; 8.7%), alkane C17, dictyopterene D and C (III, IV), tribromomethane (V), 1-iodopentane, others. F. petiolata headspace was characterized by DMS (22.2%), 6-methylhept-5-en-2-one (9.5%), C17 (9.1%), II (6.5%), compounds I-V. DMS (59.3%), C15 (14.5%), C17 (7.2%) and C19 (6.3%) dominated in P. oceanica headspace. Sesquiterpenes were found in D. dichotoma, predominantly germacrene D (28.3%) followed by other cadinenyl (abundant), muurolenyl

Goniadella bobrezkii (Annenkova, 1929) is a small goniadid worm identifiable by the number of anterior uniramous parapodia and by the position of the posterior spine-like notochetae arising dorsal to dorsal cirri. Although it was already reported in the Mediterranean Sea, it has never been found in the Italian waters. This study represents the first generic and specific record of G. bobrezkii along Italian coasts. A total of 25 specimens were collected in a Posidonia oceanica (L.) Delile bed, depth of 7 m, off Civitavecchia (Rome).

Seagrass ecosystems have recently been identified for their role in climate change mitigation due to their globally-significant carbon sinks; yet, the capacity of seagrasses to sequester carbon has been shown to vary greatly among seagrass ecosystems. The recalcitrant nature of seagrass tissues, or the resistance to degradation back into carbon dioxide, is one aspect thought to influence sediment carbon stocks. In this study, a global survey investigated how the macromolecular chemistry of seagrass leaves, sheaths/stems, rhizomes and roots varied across 23 species from 16 countries. The goal was to understand how this seagrass chemistry might influence the capacity of seagrasses to contribute to sediment carbon stocks. Three non-destructive analytical chemical analyses were used to investigate seagrass chemistry: thermogravimetric analysis and solid state 13C-NMR and infrared spectroscopy. A strong latitudinal influence on carbon quality was found, whereby temperate seagrasses contained 5% relatively

Advantages of sSNP genotyping: sSNPs afford many advantages for analysis of phylogenetic relationships among microbial strains, especially closely related clonal organisms such as the M. tuberculosis complex. Most or all sSNPs are selectively neutral and hence minimally subject to convergence, a process that can obscure or distort evolutionary relationships (Kimura 1983). Binary data are obtained, which means that the information is readily amenable to storage, retrieval, analysis by personal computers equipped with simple software, and comparison between different laboratories and studies. Importantly, the considerable biomedical interest in human SNPs (Schorket al. 2000; Dalyet al. 2001; Gut 2001; Johnsonet al. 2001) means that microbial pathogen research will benefit extensively from the ongoing development and implementation of methods to index very large numbers of SNPs efficiently, inexpensively, and automatically (Kwok 2001). Because of the many advantages of using sSNP analysis for ...

Coastal waters of the Great Barrier Reef (GBR) are contaminated with agricultural pesticides, including the photosystem II (PSII) herbicides which are the most frequently detected at the highest concentrations. Designed to control weeds, these herbicides are equally potent towards non-target marine species, and the close proximity of seagrass meadows to flood plumes has raised concerns that seagrasses may be the species most threatened by herbicides from runoff. While previous work has identified effects of PSII herbicides on the photophysiology, growth and mortality in seagrass, there is little comparative quantitative toxicity data for seagrass. Here we applied standard ecotoxicology protocols to quantify the concentrations of four priority PSII herbicides that inhibit photochemistry by 10, 20 and 50% (IC10, IC20 and IC50) over 72 h in two common seagrass species from the GBR lagoon. The photosystems of seagrasses Zostera muelleri and Halodule uninervis were shown to be generally more ...

Acanthodii (3) Acanthomorpha (1) Acanthomorphata (2) Acariformes (115) Acaromorpha (19) Accipitridae (2) Accipitriformes (6) Achipterioidea (1) Actinopteri (4) Actinopterygii (4) Aculeata (60) Aculifera (1) Adephaga (88) Aequorlitornithes (35) Afrotheria (2) Agaonidae (3) Agnostida (1) Agromyzidae (3) Alismatales (1) Alismatanae (10) Allogromiidae (1) Allosauroidea (1) Allotheria (2) Allotriocarida (31) Alveolata (17) Amaurobioidea (26) Ameroidea (5) Ameronothroidea (2) Amoebozoa (10) Amorphea (42) Ampullarioidea (1) Angiospermae (156) Angusteradulata (31) Animalia (234) Ankyroida (2) Annelida (24) Anomalogonatae (48) Anthocerotophyta (1) Anthribidae (1) Antliophora (10) Anystae (1) Anystina (4) Aphelinidae (5) Apiales (1) Apiformes (14) Apo-Spermatophyta (2) Apo-Tracheophyta (10) Apocrita (114) Apoditrysia (78) Apoidea (18) Apoikozoa (3) Apotracheophyta (32) Arachnida (479) Araneae (39) Araneida (61) Araneoidea (13) Araneomorphae (39) Archaeobranchia (3) Archaeorthoptera (11) Archosauria (21) ...

Acanthodii (3) Acanthomorpha (1) Acanthomorphata (2) Acariformes (115) Acaromorpha (19) Accipitridae (2) Accipitriformes (6) Achatinina (1) Achipterioidea (1) Actinopteri (4) Actinopterygii (4) Aculeata (119) Aculifera (1) Adephaga (88) Aequorlitornithes (35) Afrotheria (2) Agaonidae (3) Agnostida (1) Agromyzidae (3) Alismatales (1) Alismatanae (10) Allogromiidae (1) Allosauroidea (1) Allotheria (2) Allotriocarida (35) Alveolata (18) Amaurobioidea (26) Ameroidea (5) Ameronothroidea (2) Amoebozoa (10) Amorphea (43) Ampulicidae (1) Ampullarioidea (1) Angiospermae (185) Angusteradulata (31) Animalia (233) Ankyroida (2) Annelida (24) Anomalogonatae (48) Anthocerotophyta (1) Anthribidae (1) Antliophora (8) Anystae (1) Anystina (4) Aphelinidae (5) Apiales (3) Apiformes (15) Apo-Spermatophyta (3) Apo-Tracheophyta (11) Apocrita (98) Apoditrysia (73) Apoidea (49) Apoikozoa (3) Apotracheophyta (31) Arachnida (487) Araneae (39) Araneida (61) Araneoidea (13) Araneomorphae (39) Archaeobranchia (3) ...

Introduction Marine turtles are important components of the Sulu-Sulawesi Marine Ecoregion, (SSME). Green turtles are important for maintaining healthy seagrass beds and coral reefs. Without constant grazing, seagrass beds may become overgrown, obstructing currents, shading the bottom, or decomposing. Seagrass beds in turn are nurseries for a number of species of commercial fish and crustaceans, including shrimp. On coral reefs, green turtles crop algae that can compete with corals. Hawksbill turtles control the population of sponges in coral reefs, which can easily out-compete corals for the same space. Through selective foraging, hawksbill turtles are able to impact the overall reef diversity. Leatherback turtles eat large quantities amounts of jellyfish, helping to keep their populations under control. Jellyfish prey on larval fish, many species of which are economically important to humans. Loggerhead turtles are known to help recirculate sediments on the seabed and distribute nutrients ...

In three stories or editorials (May 19th 29th and 30th, 2015) the Bradenton Herald wrote about the tremendous recovery in seagrass beds in Tampa Bay - news all Floridians should be absolutely thrilled about. A reading of these pieces includes far more than a suggestion that there is a cause-and-effect connection between the seagrass bed recoveries and the fertilizer blackout component of the relevant fertilizer ordinances passed in the region (Pinellas-2010; City of Tampa-2011; Manatee-2011).. Confessing that this blog advocates for the Green Industries (turfgrass, landscape, golf, professional lawn care, etc.), and that I have strong feelings about personal property rights, Ill defer offering my own assessment of those editorial suggestions. Instead, let me use the information offered by the Tampa Bay Estuary Program (TBEP) itself.. The following comes from an article published on TBO.com on March 22, 2014. In that article, the TBEP was attributed as stating that 34,642 acres of seagrass beds ...

The Memorandum of Understanding on the Conservation and Management of Dugongs and their Habitats throughout their Range (Dugong MOU) aims to promote internationally coordinated actions to ensure the long-term survival of dugongs and their seagrass habitats throughout their extensive range. The MOU entered into effect on 31 October 2007 in Abu Dhabi, United Arab Emirates. The Dugong MOU is administered by a Secretariat based in Abu Dhabi alongside the Raptors MoU Coordinating Unit at the CMS Office - Abu Dhabi.

The export of the calcitic platelets (coccoliths) of coccolithophores to the sea floor acts as a long-term sink of carbon. In order to understand the effects of current ocean acidification on coccolithophore calcification, it is important to estimate the amount of calcite that is bound in single coccoliths, which - due to their minuteness (1-10 μm) - cannot be individually weighed. To estimate single coccolith weights, this study takes advantage of the birefringence method (Beaufort, 2005), which links the interference color of calcite under polarized light with calcite thickness. Two similar techniques, one using crossed-polarized light (XPL) and one using circular polarized light (CPL), were tested to compare coccolith weight estimates of cultured single clones of Gephyrocapsa oceanica, which - in a previous study (Rickaby et al., 2010) - were grown in increasing concentrations of dissolved inorganic carbon (DIC) but constant pH-levels (~8.1) to reflect long-term buffering of the ocean. In ...

Seagrasses are one of the most productive and economically important habitats in the coastal zone, but they are disappearing at an alarming rate, with more than half the worlds seagrass area lost since the 1990s. They now face serious threat from climate change, and there is much current speculation over whether they will survive the coming decades. The future of seagrasses depends on their ability to recover and adapt to environmental change-i.e. their resilience. Key to this, is understanding the role that genetic diversity plays in the resilience of this highly clonal group of species. To investigate population structure, genetic diversity, mating system (sexual versus asexual reproduction) and patterns of connectivity, we isolated and characterised 23 microsatellite loci using next generation sequencing for the Australian seagrass species, Zostera muelleri (syn. Z. capricorni), which is regarded as a globally significant congeneric species. Loci were tested for levels of variation based ...

Pollen grain on a chip. Scanning electron micrograph (SEM) of a pollen grain from an Aponogeton sp. plant on a digital camera chip. Pollen grains are reproductive structures produced by the male parts of flowering plants. The grain has a spiked outer wall (exine), which may assist in its dispersal by improving its adherence to pollinating insects. Aponogeton sp. plants are aquatic and are found in tropical to warm temperate regions of Africa, Asia and Australasia. - Stock Image C002/6224

Holmer M, Hasler-Sheetal H (2014). Sulfide intrusion in seagrasses assessed by stable sulfur isotopes - A synthesis of current results. Frontiers in Marine Sciences 27 November 2014. DOI: 10.3389/fmars.2014.00064. Petersen JK, Hasler B, Timmermann K,Nielsen P, Tørring DB, Larsen MM, Holmer M (2014). Mussels as a tool for mitigation of nutrients in the marine environment. Marine Pollution Bulletin. 82:137-143. Hasler-Sheetal H, Holmer M (2015). Sulfide intrusion and detoxification in the seagrass Zostera marina. PloS One. DOI:10.1371/journal.pone.0129136. Hasler-Sheetal H, Fragner L, Holmer M, Weckwerth W (2015). Diurnal effects of anoxia on the metabolome of the seagrass Zostera marina. Metabolomics 1-11. DOI: 10.1007/s11306-015-0776-9. Castorani MCN, Glud RN, Hasler-Sheetal H, Holmer M (2015). Light indirectly mediates bivalve habitat modification and impacts on seagrass. Journal of Experimental Marine Biology and Ecology 472:41-53. DOI:10.1016/j.jembe.2015.07.001. Hasler-Sheetal H, Castorani ...

A lace wig, also called a lace unit, hair system or cranial hair prosthetic, are hair extensions that create the illusion that hair is growing out of ones scalp, and therefore is one of the most natural looking extensions on the market. This is achieved by the method of the lace wig construction. A fine lace material is used as the base where individual hairs are meticulously hand tied onto the lace.. The term full lace denotes that the base cap is made fully of lace, while lace front wigs have lace in front and different materials at the back of the cap. One is also able to purchase a lace frontal hair piece that can be used with weaving wefts. With this arrangement, the wefts are glued or sewn into ones hair and the lace frontal applied only at the hairline.. There are typically two types of lace materials used to make the base cap- Swiss and French lace. Swiss lace is very fine and delicate and is the most undetectable choice. Though French lace is not as undetectable (but also ...

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Through the ages, dogbane (Apocynum canna-binum) and milkweed (Asclepias) have been prized for their effects on the circulatory system. These plants contain

Amplify your taste in décor with stunning seagrass wall-to-wall broadloom rugs from Natural Area rugs.. Get aesthetically pleasing seagrass wall-to-wall broadloom rugs from our artistic inventory and level up your décor game. Seagrass is durable, it has hypoallergenic properties, and it provides you maximum comfort while you walk. The fibers in the seagrass rugs gently tickle the nerves in your feet without a hint of discomfort or abrasion. Plus as seagrass is non-porous, you dont have to worry about excessive staining, water damage, mold accumulation, or any other problem. You can easily maintain the rugs and as seagrass is eco-friendly, you dont have to worry about if it would contribute to landfill waste. ...

Temperate and tropical seagrasses are susceptible to wasting disease outbreaks caused by pathogenic protists of the genus Labyrinthula. Even though there is an increasing awareness of the environmental conditions that influence the etiology of seagrass-. Labyrinthula disease dynamics, the biochemical basis of seagrass defense responses, in particular chemical defenses, is still vastly understudied. Using an in vitro bioassay, we provide evidence that previously characterized phenolic and potentially novel, undescribed non-phenolic metabolites derived from Thalassia testudinum Banks ex Konig exhibit anti-labyrinthulid activity. All phenolic compounds tested displayed dose-dependent behavior and selected combinations interacted synergistically. The flavone glycoside thalassiolin B was roughly 20-100 times more active than any phenolic acid tested. Based upon values reported in the literature, it was calculated that infected specimens of T. testudinum contain natural concentrations of phenolic ...

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A JCU team led by Dr Catherine Collier studied seagrass growing near underwater volcanic vents in PNG. Carbon dioxide from the vents increases the acidity of nearby water. The researchers found that the more acidic the water was, the more the plant grew. „The increased growth has nothing to do with the acidified water as such, but increased acidification means more carbon, which means the seagrass photosynthesises quicker, said Dr Collier. Seagrass provides food and habitat to many species and is a significant carbon sink - soaking up 15 percent of the carbon stored in the ocean every year. But pollution and development mean the plants are declining at a rate of seven per cent a year. Dr Collier said every one of the ten varieties of seagrass so far tested had done better in acidified water. But there were still questions over whether other aspects of climate change would adversely affect them. „On the one hand, if acidification increases seagrass growth, they will be able to absorb more ...

From JAMES COOK UNIVERSITY. Scientists find some thrive in acid seas. Researchers from James Cook University have found that ocean acidification may not be all bad news for one important sea-dwelling plant.. A JCU team led by Dr Catherine Collier studied seagrass growing near underwater volcanic vents in PNG. Carbon dioxide from the vents increases the acidity of nearby water.. The researchers found that the more acidic the water was, the more the plant grew.. The increased growth has nothing to do with the acidified water as such, but increased acidification means more carbon, which means the seagrass photosynthesises quicker, said Dr Collier.. Seagrass provides food and habitat to many species and is a significant carbon sink - soaking up 15 percent of the carbon stored in the ocean every year. But pollution and development mean the plants are declining at a rate of seven per cent a year.. Dr Collier said every one of the ten varieties of seagrass so far tested had done better in acidified ...

Monitoring the seagrass meadows of the Molise coastal waters , on behalf of the Molise Region Environmental Commission, in order to ascertain the ecological and environmental quality of the marine coastal waters. Testing the density of the vegetation was carried out underwater, using an aqualung, by the Giraud method, along strips parallel to and at right angles to the coast. The samples taken for the phenological study, underwater and for each site, consisted of 10 leaf blades with rhizomes and roots attached ...

A team of 21 researchers from 11 nations, including professor Robert JJ Orth of the Virginia Institute of Marine Science, has completed the first-ever study of the risk of extinction for individual seagrass species around ...

A beautiful open-weave handled bag that will take you from beach to markets. Hand-woven from sustainable Seagrass fibres, this flat bottomed bag will stand upright and open. Throw in your everyday essentials for a eco-friendly and stylish day bag or use as a basket around the home. Small size.

Description: Thallus is a thin, bright green blade up to 8 cm (3 in) tall with finely ruffled margins. Blades, which are one cell thick, start out as small sacs, then split open as they expand. Cells are small, 4-6 μm diameter. Habitat: This annual grows only on seagrass from semi-exposed to protected habitats. Similar taxa: Monostroma, Ulvaria. ...

Tricking algaes biological clock to remain in its daytime setting can dramatically boost the amount of valuable compounds these simple marine plants can produce when grown in constant light.

The underwater flora of the Atlantic Ocean provides a considerable amount of these marine plants are algae food rich in mineral and vitamin B12.

You probably remember the name chlorophyll from your school days. Yes, we are talking about the green stuff produced by organisms that carry out photosynthesis.But chlorophyll also has special advantages for our skin. WHAT IS CHLOROPHYLL? Chlorophyll is responsible for the green colour of land and marine plants and is

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Some of these mutations give cells an edge over other cells. Selective pressure means that cells with certain characteristics win the survival of fittest battle within the tumor. The result is that different neighborhoods of the tumor will be populated with clones of the fittest cells. Perhaps one region of the tumor is low in nutrients; it will contain cells that have picked up mutations to survive in a low nutrient environment. Another region might be under constant exposure to the bodys immune system; it will contain cells with immune evasion mutations. This is how differences within tumors emerge, and this diversity is also one reason why each patients tumor is unique, and subsequently why their tumors vulnerability to therapy is different, too.. This genomic instability also exists between patients. A combination of random chance and differences in the genome lead to unique tumors to develop in each patient. Lets say, for example, that we are looking at a group of breast cancer ...

The abstract reads: Two Gram-negative bacteria with a high G+C content were isolated from soil in undergraduate microbiology classes by enriching for low nutrient growth and neonicotinoid pesticide tolerance. DNA from these isolates was purified and sequenced using a hybrid approach. Here we report the genome sequences of Pseudomonas alkylphenolica strain Neo and Variovorax sp. strain CSUSB ...