Results 81 to 90 of about 7,869 (211)
Distribution and abundance of scaup using baitfish and sportfish farms in eastern Arkansas
Journal of the World Aquaculture Society, 2021 Arkansas' bait‐ and sportfish facilities are commonly used by various piscivorous bird species, including lesser scaup (Aythya affinis) and greater scaup (A. marila) that consume substantial quantities of fish.
Stephen A. Clements +6 more
doaj +1 more source
River Ouse: fisheries drought report 1996 [PDF]
, 1997 The basis for undertaking this study was to examine factors and potential impacts affecting fish and fishing in relation to low flow drought conditions and what other impacts may arise as a result of further reduced flows resulting from abstraction.
Frear, P.A.
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Ecology and Evolution, Volume 16, Issue 2, February 2026.Animals that live in a wide range of environments possess plastic traits such as colour change, but most research has only looked at this within single populations. In this study, we tested four populations of the Arabian killifish from marine and freshwater ecosystems, examining how well they change colour against different backgrounds.
Ateah Alfakih +2 more
wiley +1 more source
The Molecular Analysis of Hawaiian Bird Diets [PDF]
, 2018 The aim of this project is to utilize high-throughput molecular methods to investigate the diets of three non-native and one native Hawaiian bird species.
Scinto, Alissa C
core +1 more source
Oil Things Bright and Beautiful? How Hydrocarbon Pollution Impacts Guppy Ornamentation
Ecology and Evolution, Volume 16, Issue 2, February 2026.Spatial variation in crude oil pollution in Trinidad leads to differing levels of pollutant exposure in connected guppy populations. Male guppy ornamentation is an important sexually selected trait affected by environmental changes. Measuring area and intensity of this ornamentation, we found guppies from anthropogenically polluted habitats had greater
Hannah Rose McGovern +3 more
wiley +1 more source
Memorias do Instituto Oswaldo Cruz, 1984 O material estudado foi coletado no "pinguim naufragado", Sphenicus magellanicus (Forster), na baia de Guanabara, Rio de Janeiro e cedido pela bióloga Carla Chediak.
Cláudia Portes Santos
doaj +1 more source
Life-history variation and age at maturity in Eurasian Perch (Perca fluviatilis L.) [PDF]
, 2003 This thesis deals with life-history variation in perch, with special focus on age at maturity. We conducted field studies to uncover the variation within short geographic distances and a literature review to study variation on a large geographic scale in
Heibo, Erik
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Pollution and Foraging Behavior of Pied Kingfisher Ceryle rudis in Bujumbura Bay of Lake Tanganyika, Burundi: Conservation Implications [PDF]
, 2018 Lake Tanganyika is threatened by overfishing, deforestation, climate change and water pollution. Very few studies have investigated the effects of pollution on semi-aquatic communities such as aquatic birds.
Nduwayezu, J. (Joselyne) +1 more
core +1 more source
Biological Reviews, Volume 101, Issue 1, Page 519-538, February 2026.ABSTRACT Facilitative interspecific interactions (FIIs) confer benefits to at least one participant without detriment to others. Although often less emphasised than antagonistic interactions in ecological studies, this review highlights the significant ecological role of FIIs across biological scales – from individual behaviours to population ...
Eduardo Döbber Vontobel +5 more
wiley +1 more source
Determination of Mercury Concentration in Different Tissues of Coot (Fulica Atra), Mallard (Anas Platyrhynchos) and Great Cormorant (Phalacrocorax Carbon) [PDF]
سلامت و محیط, 2012 Background and Objectives: The heavy metals pollution in aquatic ecosystems especially mercury, always makes concern about health of aquatic organisms. So, the purposes of this study were determination of total mercury in different tissues of the three ...
N Bahramifar, A Esmaili-Sari, J Azami
doaj