Results 31 to 40 of about 82,204 (193)

Taxonomic and functional-trait metrics track recovery of demersal fish and shrimp communities following system collapse

Frontiers in Marine Science
Monitoring programs that integrate both structural and functional ecosystem components play integral roles in ecosystem management and conservation planning.
Magnus Aune, Virginie Ramasco, Nadine Wells, Margaret Warren, Frédéric Cyr, Eric J. Pedersen, Eric J. Pedersen, Mariano Koen-Alonso, Mariano Koen-Alonso, Elena Eriksen, Raul Primicerio, Ulf Lindstrøm, Ulf Lindstrøm, Paul E. Renaud   +13 more
doaj   +1 more source

Species' traits and food‐web complexity interactively affect a food web's response to press disturbance

Ecosphere, 2016
Given current levels of biodiversity loss and environmental change, studies of how food webs respond to disturbance should broaden their focus beyond short‐term disturbances to explore the effects of long‐term, “press” disturbances.
K. L. Wootton, D. B. Stouffer
doaj   +1 more source

Komposisi Isotop Stabil dan Trofik Level Kerang Kipas (Pectenidae: Chlamydinae sp.) dan Produsen Primer di Pulau Pari, Kepulauan Seribu, DKI Jakarta

Al-Kauniyah Jurnal Biologi, 2013
Scallop (Pectenidae: Chlamydinae sp.) is fauna habitat in seashore ecosystem and had commercial value commudity. The aims this study were to identify the main composition of stable isotopes, food sources, and trophic level from scallop and potential food
Mardiansyah Mardiansyah, Yusli Wardiatno, Tri Prartono   +2 more
doaj   +1 more source

Overfishing and the replacement of demersal finfish by shellfish: an example from the English Channel. [PDF]

PLoS ONE, 2014
The worldwide depletion of major fish stocks through intensive industrial fishing is thought to have profoundly altered the trophic structure of marine ecosystems.
Carlotta Molfese, Doug Beare, Jason M Hall-Spencer   +2 more
doaj   +1 more source

Trophic assimilation efficiency markedly increases at higher trophic levels in four-level host–parasitoid food chain [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2016
Trophic assimilation efficiency (conversion of resource biomass into consumer biomass) is thought to be a limiting factor for food chain length in natural communities. In host-parasitoid systems, which account for the majority of terrestrial consumer interactions, a high trophic assimilation efficiency may be expected at higher trophic levels because ...
Sanders, Dirk, Moser, Andrea, Newton, Jason, van Veen, F. V. Frank   +3 more
openaire   +4 more sources

Concentration of Metals in Native and Invasive Species of Fish in the Fluvial-Lagoon-Deltaic System of the Palizada River, Campeche

Fishes, 2021
Aquatic organisms, such as fish, are important indicators of the bioavailability of metals in coastal environments, demonstrating the capacity of different species to bioaccumulate these metallic elements.
María del Refugio Castañeda-Chávez, Fabiola Lango-Reynoso, Gabycarmen Navarrete-Rodríguez, Armando Toyokazu Wakida-Kusunoki   +3 more
doaj   +1 more source

Nitrogen isotope composition of amino acids reveals trophic partitioning in two sympatric amphipods

Ecology and Evolution, 2020
According to ecological theory, two species cannot occupy the same niche. Using nitrogen isotope analyses (δ15N) of amino acids, we tested the extent to which two sympatric deposit‐feeding amphipods, Monoporeia affinis and Pontoporeia femorata, partition
Matias Ledesma, Elena Gorokhova, Henry Holmstrand, Andrius Garbaras, Agnes M. L. Karlson   +4 more
doaj   +1 more source

Long-Term Variations of Biogenic Elements and Nutritional Status in Daya Bay, Northern South China Sea

Journal of Marine Science and Engineering, 2023
This study explored the variations in the characteristics of the trophic structure of Daya Bay island waters over the last four decades based on the survey findings and research data on biogenic elements (dissolved inorganic nitrogen (DIN), NO2−, NO3 ...
Zhicheng Guo, Yayuan Xiao, Yong Liu, Peng Wu, Chunhou Li   +4 more
doaj   +1 more source

Trophic levels of fish species of commercial importance in the Colombian Caribbean

Revista de Biología Tropical, 2011
Ecological studies on commercial important fish species are of great value to support resource management issues. This study calculated trophic levels of those Colombian Caribbean fish species whose diet has been locally described.
Camilo B García, Cristian Camilo Contreras   +1 more
doaj  

Fatty Acids as a Tool to Understand Microbial Diversity and Their Role in Food Webs of Mediterranean Temporary Ponds

Molecules, 2014
Temporary Mediterranean ponds are complex ecosystems which support a high diversity of organisms that include heterotrophic microorganisms, algae, crustaceans, amphibians and higher plants, and have the potential to supply food and a resting place to ...
Carla C. C. R. de Carvalho, Maria-José Caramujo   +1 more
doaj   +1 more source