Results 21 to 30 of about 1,095,505 (352)

Impacts of multiple anthropogenic stressors on the transcriptional response of Gammarus fossarum in a mesocosm field experiment

open access: yesBMC Genomics, 2022
Background Freshwaters are exposed to multiple anthropogenic stressors, leading to habitat degradation and biodiversity decline. In particular, agricultural stressors are known to result in decreased abundances and community shifts towards more tolerant ...
Marie V. Brasseur   +8 more
doaj   +1 more source

Is it worth the extra mile? Comparing environmental DNA and RNA metabarcoding for vertebrate and invertebrate biodiversity surveys in a lowland stream [PDF]

open access: yesPeerJ
Environmental DNA (eDNA) metabarcoding has emerged as a promising approach to assess biodiversity and derive ecological status classes from water samples.
Till-Hendrik Macher   +7 more
doaj   +2 more sources

A spatial analysis of seagrass habitat and community diversity in the Great Barrier Reef World Heritage Area

open access: yesScientific Reports, 2021
The Great Barrier Reef World Heritage Area (GBRWHA) in north eastern Australia spans 2500 km of coastline and covers an area of ~ 350,000 km2. It includes one of the world’s largest seagrass resources. To provide a foundation to monitor, establish trends
Alex B. Carter   +5 more
doaj   +1 more source

Protocols for sample preparation and compound-specific stable-isotope analyses (δ2H, δ13C) of fatty acids in biological and environmental samples

open access: yesMethodsX, 2023
Compound-specific stable-isotope analysis (CSIA) of fatty acids is a powerful tool to better understand the trophic transfer of fatty acids and their biochemical fate in and across ecosystems, including tracing animal migration and understanding ...
Matthias Pilecky   +3 more
doaj   +1 more source

DNA metabarcoding reveals the complex and hidden responses of chironomids to multiple stressors

open access: yesEnvironmental Sciences Europe, 2018
Background Chironomids, or non-biting midges, often dominate stream invertebrate communities in terms of biomass, abundance, and species richness and play an important role in riverine food webs.
Arne J. Beermann   +4 more
doaj   +1 more source

Spatial and Temporal Patterns in Macroherbivore Grazing in a Multi-Species Tropical Seagrass Meadow of the Great Barrier Reef

open access: yesDiversity, 2021
Macroherbivory is an important process in seagrass meadows worldwide; however, the impact of macroherbivores on seagrasses in the Great Barrier Reef (GBR) has received little attention.
Abigail L. Scott   +2 more
doaj   +1 more source

Paired O2–CO2 measurements provide emergent insights into aquatic ecosystem function

open access: yesLimnology and Oceanography Letters, 2020
Metabolic stoichiometry predicts that dissolved oxygen (O2) and carbon dioxide (CO2) in aquatic ecosystems should covary inversely; however, field observations often diverge from theoretical expectations.
D. Vachon   +11 more
semanticscholar   +1 more source

Estimating intraspecific genetic diversity from community DNA metabarcoding data [PDF]

open access: yesPeerJ, 2018
Background DNA metabarcoding is used to generate species composition data for entire communities. However, sequencing errors in high-throughput sequencing instruments are fairly common, usually requiring reads to be clustered into operational taxonomic ...
Vasco Elbrecht   +3 more
doaj   +2 more sources

Potential for Mesopelagic Fishery Compared to Economy and Fisheries Dynamics in Current Large Scale Danish Pelagic Fishery

open access: yesFrontiers in Marine Science, 2021
Mesopelagic fish species represent a large potentially unexploited resource for the fishing industry and the fish meal, oil, nutraceutical, and pharmaceutical production.
Silvia Paoletti   +4 more
doaj   +1 more source

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