Results 61 to 70 of about 7,920 (201)

Behavior of Nannopterum brasilianus (Gmelin, 1789) (Suliformes: Phalacrocoracidae) in an urban park in the municipality of Uberlândia, Minas Gerais State

open access: yesBiotemas, 2019
The modification of landscapes by anthropic action, mainly due to urbanization, exerts strong pressure on birds. Public parks and other green areas offer favorable conditions for birds in cities throughout the year. Nannopterum brasilianus (Gmelin, 1789)
Dayana Nascimento Carvalho   +2 more
doaj   +1 more source

Diet, phenology and body size shape nutrient release by songbirds

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Animals can dramatically alter ecosystem structure and function through the cycling and transport of nutrients in their waste. While birds are particularly capable of influencing nutrient cycles due to their high mobility, abundance, metabolism and functional diversity,
Linsey Chen   +2 more
wiley   +1 more source

Life-history variation and age at maturity in Eurasian Perch (Perca fluviatilis L.) [PDF]

open access: yes, 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
core  

Fish Exhibit Distinct Fluorochemical and δ15N Isotopic Signatures in the St. Lawrence River Impacted by Municipal Wastewater Effluents

open access: yesFrontiers in Environmental Science, 2022
We examined the influence of Montreal wastewater treatment plant (WWTP) effluents on two top predators, Walleye (Sander vitreus) and Sauger (Sander canadensis), with a focus on δ15N isotopic signatures and per- and polyfluoroalkyl substances (PFAS ...
Hermann A. Kaboré   +7 more
doaj   +1 more source

Can manipulative parasites modify host‐mediated trophic effects? Experimental evidence from Schistocephalus solidus and three‐spined sticklebacks

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Parasites can alter host traits, thereby reshaping host interactions and modifying density‐ and trait‐mediated effects in trophic cascades. But despite increasing research in parasite ecology, the cascading effects of parasitism from individual hosts to population and ...
Maja Drakula   +8 more
wiley   +1 more source

Mercury distribution in the great cormorant (Phalacrocorax carbo) from the Krogulna ponds and Nysa Kłodzka River (Poland)

open access: yesVeterinární Medicína, 2023
Mercury belongs among the highly hazardous substances present in the environment and represents a great health risk for many animals including predatory and piscivorous birds.
K Novotna Kruzikova   +6 more
doaj   +1 more source

A new acoustic telemetry tag that identifies carrier mortality by monitoring activity level

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract We present a new acoustic telemetry tag capable of detecting whether its carrier stops moving for long enough to presume the organism has died, and of reporting the time elapsed since movement ceased. The tag uses existing environmental sensor technology together with an algorithm with user‐specifiable thresholds, and importantly, can separate
Karl P. Phillips   +7 more
wiley   +1 more source

Cormorant predation on PIT-tagged lake fish [PDF]

open access: yes, 2014
The present study use data from recovered PIT (Passive Integrated Transponder) tags to explore species- and size-specific annual predation rates by cormorants on three common lacustrine fishes (size range 120-367 mm) in a European lake; roach (Rutilus ...
Baktoft, Henrik   +5 more
core   +2 more sources

Bird Diversity in Fruit Gardens in Bang Nang Li Sub-district, Amphawa District, Samut Songkram Province [PDF]

open access: yesSuan Sunandha Rajabhat University Journal of Science and Technology, 2014
This research is quantitative and qualitative explorative research. The purposes of this research was 1) to study bird species, feeding behavior, abundance and status in study area 2) to study activities in utilization of birds in the study site.
Nitinarth Charoenpokaraj
doaj  

The influence of a cooling water system on waterbird habitat use in a coastal environment

open access: yesIbis, EarlyView.
This study investigated the impact of a cooling water system at a nuclear power plant in northern Europe on coastal waterbird habitat use. In winter, the cooling water system provided preferential areas for waterbirds with warm productive waters, and, more importantly, with ice‐free areas.
Andreas C. Bryhn   +2 more
wiley   +1 more source

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