Results 61 to 70 of about 518 (171)
, 1913 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +2 more sources
Combining Hydroacoustics and eDNA to Estimate Species‐Specific Biomass in a Pelagic Fish Community
Environmental DNA, Volume 7, Issue 5, September–October 2025.Integrated eDNA and hydroacoustic surveys were used to determine species‐specific assemblages in a well‐studied pelagic fish community. The detection and proportion of target species estimated by eDNA were comparable to that of historic gill‐netting surveys.
Victoria Elizabeth Kopf +5 more
wiley +1 more source
Ecology and Evolution, Volume 15, Issue 8, August 2025.Density‐dependent processes are important for a fundamental understanding of the regulation of populations. Laboratory experiments were conducted with the non‐biting midge Chironomus riparius (Diptera: Chironomidae) to investigate the impact of different combinations of food supply and larval densities on development and mortality.
Tido Strauss +6 more
wiley +1 more source
Journal of Limnology, 2013 To determine the extent and timescale of predation impacts occurring in a historically fishless headwater lake near Sudbury, Canada, we surveyed the larval remains of the invertebrate predator Chaoborus and the pelagic cladoceran Bosmina, within a 210Pb ...
Andrew L. Labaj +3 more
doaj +1 more source
Homeostasis and Polymorphism in Vernal Development of Chaoborus Americanus [PDF]
Ecology, 1973 Last instar larvae of Chaoborus americanus overwinter in a state of developmental arrest (diapause) but remain otherwise active and capable of feeding. The diapausing larvae are developmentally responsive to long—day photoperiod and food. A portion of a wild—caught population responds rapidly to these conditions; the remainder of the population is more
openaire +2 more sources
Oikos, Volume 2025, Issue 8, August 2025.Habitat coupling – where mobile predators forage over broad spatial scales and, in doing so, link food webs from semi‐discrete habitat patches – has emerged as a major structuring force in lake ecosystems. For the cold‐water apex predator lake trout Salvelinus namaycush, food‐web structure and morphometry‐driven accessibility to nearshore areas in ...
Tazi H. Rodrigues +2 more
wiley +1 more source
Is competition an interaction as relevant as predation for tropical planktonic cladocerans?
Acta Limnologica Brasiliensia, 2018 Aim To test the relevance of competition and predation for the two most abundant and frequent cladoceran populations, the medium-sized Ceriodaphnia richardi Sars, 1901 and the large-sized Daphnia gessneri Herbst, 1967, in a tropical shallow lake ...
Tânia Cristina dos Santos Ferreira +2 more
doaj +1 more source
Freshwater Biology, Volume 70, Issue 7, July 2025.ABSTRACT We carried out short‐term field experiments (duration 1–3 days) to study the impact of predation by natural densities of Boeckella major on zooplankton in Australian ephemeral billabongs (oxbow lakes). Predation reduced total zooplankton densities by 33.6%–91.9%.
John D. Green, Russell J. Shiel
wiley +1 more source
Ecosphere, 2020 Inducible defense is adaptive when prey organisms cope with fluctuations of predation risk, and there exists ample variations of inducible defense both within a species and between species even in a single habitat. Daphnia, a freshwater zooplankton genus,
Mariko Nagano, Takehito Yoshida
doaj +1 more source
Implications for the use of sedimentary invertebrate communities to infer past presence of fish
Knowledge and Management of Aquatic Ecosystems, 2010 We investigated surface sediment assemblages of invertebrates from nine shallow lakes in southern Finland and assessed the relationship between invertebrate assemblages and fish status at local scale for the purpose of ...
Nevalainen L., Luoto T.P.
doaj +1 more source