Results 91 to 100 of about 31,733 (262)

Invasive goldfish trigger a regime shift in experimental lake ecosystems of varying trophic state

Journal of Animal Ecology, EarlyView.
The pet trade distributes exotic animals around the globe that enrich human lives. However, some pets become pests when released into the wild. This study provides experimental evidence that goldfish will negatively affect native freshwater organisms and ecosystems.
William D. Hintz, Hannah Barrett, Rick A. Relyea   +2 more
wiley   +1 more source

Prey DNA Detection in Lycosid Spiders Is Primarily Influenced by Time Since Feeding and Primer Choice

Entomologia Experimentalis et Applicata, EarlyView.
Gut content analysis using DNA metabarcoding has improved understanding of predator–prey interactions involving spiders. We tested how starvation before feeding, time since feeding, spider size, and the presence of egg sacs or spiderlings affect prey DNA detection in Lycosidae.
Jeffery Marker, Denis Lafage, Eva Bergman, Ann Erlandsson   +3 more
wiley   +1 more source

Functional feeding groups of aquatic insect families in Latin America: a critical analysis and review of existing literature

Revista de Biología Tropical, 2014
Aquatic macroinvertebrates are involved in numerous processes within aquatic ecosystems. They often have important effects on ecosystem processes such as primary production (via grazing), detritus breakdown, and nutrient mineralization and downstream ...
Alonso Ramírez, Pablo E Gutiérrez-Fonseca   +1 more
doaj  

Diet of benthivorous fish and prey availability in streams of the Pirapó River basin-PR

Acta Limnologica Brasiliensia, 2019
Aim This study aimed to investigate the diet of seven species of fish that consume predominantly benthic macroinvertebrates, and the availability of these organisms in the environment. We analyzed the occurrence of trophic segregation between species and
Renata Guglielmetti, Marlene Rodrigues Silva, Janet Higuti, Rosemara Fugi   +3 more
doaj   +1 more source

The choice of a suitable sampler for benthic macroinvertebrates in deep rivers [PDF]

, 1980
Both chemical and biological methods are used to assess the water quality of rivers. Many standard physical and chemical methods are now established, but biological procedures of comparable accuracy and versatility are still lacking.
Drake, C.M., Elliott, J.M., Tullet, P.A.
core  

Golf courses and wetland fauna [PDF]

, 2009
Golf courses are often considered to be chemical-intensive ecosystems with negative impacts on fauna. Here we provide evidence that golf courses can contribute to the support and conservation of wetland fauna, i.e., amphibians and macroinvertebrates ...
Andersson, Erik, Colding, Johan, Lundberg, Jakob, Lundberg, Stefan   +3 more
core   +1 more source

Worldwide Invasions of Centrarchidae: The Dark Side of the Sunfish Family

Fish and Fisheries, EarlyView.
ABSTRACT Freshwater fish invasions are major drivers of global ecological change, disrupting native biodiversity and ecosystem functions. However, many invasive fish hold significant socioeconomic value, resulting in conflict over their management. Centrarchidae, which are globally distributed and are important for sportfishing and aquaculture, are now
Neil Angelo Abreo, Jonathan Tibo, António Barbosa Nogueira, Athanasios Nikolaou, Cüneyt Kaya, Ali Serhan Tarkan, Irmak Kurtul, Stelios Katsanevakis, Ronaldo Sousa, Teun Everts, Emili García‐Berthou, John S. Hargrove, Ana Clara Sampaio Franco, Jelger Erik Herder, Julian D. Olden, Darragh J. Woodford, Antonín Kouba, J. Rob Britton, Ismael Soto, Phillip J. Haubrock   +19 more
wiley   +1 more source

Using Eye Lens Stable Isotopes to Identify the Rearing Origin of Fall Age‐0 Walleye (Sander vitreus)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Isotope values in fish eye lenses may be useful in differentiating rearing origins. We compared eye lens isotopic values of fall fingerling age‐0 walleye (Sander vitreus) reared in a hatchery pond, a recirculating aquaculture system (RAS), and a natural lake. Using 10 fish per rearing source, we delaminated layers from one eye lens per fish to
Justin M. Sturtz, Benjamin J. Schall, Matthew J. Ward, Cody E. Treft, Steven R. Chipps, Christopher A. Cheek   +5 more
wiley   +1 more source

Influence of peak flow changes on the macroinvertebrate drift downstream of a Brazilian hydroelectric dam

Brazilian Journal of Biology
Successive daily peak flows from hydropower plants can disrupt aquatic ecosystems and alter the composition and structure of macroinvertebrates downstream.
DMP. Castro, RM. Hughes, M. Callisto
doaj   +1 more source

A new substrate for sampling deep river macroinvertebrates [PDF]

, 2009
We compared macroinvertebrate communities colonising multiplate samplers constructed from perspex or tempered hardboard (wood) with an alternative artificial substrate constructed from folded coconut fibre matting (coir) enclosed in nylon netting ...
Chadderton, W. Lindsay, Collier, Kevin J., Hamer, Mark P.   +2 more
core   +2 more sources