Results 111 to 120 of about 36,115 (265)

Ranunculus calcareus and its role in lowland streams [PDF]

open access: yes, 1979
Ranunculus calcareus , a species of water crowfoot which occurs in clear, nutrient-rich chalk streams, was studied. Seasonal changes in its biomass, its annual production and its fragmentation (leading to downstream movement of the plant) were ...
Dawson, F.H.
core  

Abiotic drivers of co‐occurrence and diversity patterns of Calopterygidae species in Amazonian protected freshwaters

open access: yesEcological Entomology, Volume 51, Issue 2, Page 235-249, April 2026.
Species co‐occurrences rely on their ability to explore similar or distinct available resources, and possible niche overlap can prevent their presence and establishment in a given site Damselflies of the Calopterygidae family demonstrated negative co‐occurrences in streams inside and outside PAs, highlighting that their ecological similarity is ...
Joás Silva Brito   +13 more
wiley   +1 more source

Macrophytes in Artificial Wetland

open access: yesJournal of Lake Sciences, 2002
The role and problem of macrophyte in artificial wetland for wastewater treatment are summarized and some research interests are proposed in this paper. Macrophyte plays three important roles in artificial wetland. 1) Uptake the nutrients, adsorb and accumulate heavy metal and poisonous substances from wastewater.
CHENG Shuiping, WU Zhenbin, KUANG Qijun
openaire   +2 more sources

Brown Trout Abundance in Boreal Streams With Large Wood

open access: yesEcology of Freshwater Fish, Volume 35, Issue 2, April 2026.
ABSTRACT Large wood has been found to be a crucial component in riverine ecosystems. However, due to the heavy channelization of rivers and intensive forestry practices over the past few decades, the amount of large wood in these ecosystems has decreased worldwide. River restoration aims to mitigate the effects of channelization and restore the channel
Alisa Koski   +3 more
wiley   +1 more source

Brown bullhead catfish (ameiurus nebulosus) in Lake Taupo [PDF]

open access: yes, 2003
Brown bullhead catfish (Ameiurus nebulosus) were first discovered in Lake Taupo during the early 1980s and are believed to have originated from an illegal liberation into the southern end of the lake.
Barnes, Grant E., Hicks, Brendan J.
core  

Consumer resilience suppresses the recovery of overgrazed ecosystems

open access: yesEcological Applications, Volume 36, Issue 2, March 2026.
Abstract Many heterotroph species perish when faced with severe food limitation; others can persist, adapt, and thrive. Sea urchins are emblematic of this paradox: they can overgraze kelp forests to form barren habitats, but can then survive for decades in these nutritionally depauperate seascapes.
Nathan B. Spindel   +10 more
wiley   +1 more source

The Role of Small Reservoirs in Reducing Reactive N Export Via Denitrification [PDF]

open access: yes, 2019
Reactive nitrogen (N), which harms ecosystem health, has been increasing in the biosphere, leading to higher N export to coastal ecosystems. Although man-made reservoirs can be significant sources of greenhouse gases, they can also retain N, thus ...
Phillips, Margaret, Wollheim, Wil
core   +1 more source

Marine heatwave and keystone predator loss drive broad‐scale decline and hinder recovery of a rocky intertidal kelp

open access: yesEcological Applications, Volume 36, Issue 2, March 2026.
Abstract Human activities are increasingly driving the co‐occurrence of multiple ecological stressors, resulting in interactive and cumulative impacts that can reshape ecosystem dynamics and accelerate population declines of climate‐sensitive species. Here, we use over two decades of rocky intertidal monitoring data from 17 sites spanning over 1200 km ...
Francis D. Gerraty   +6 more
wiley   +1 more source

Marsh Interspersion and Muskrat (Ondatra zibethicus) Habitat Use

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
We used camera traps to measure intensity of habitat use by muskrats along a gradient of marsh interspersion to determine whether reduced interspersion, which may be linked to the invasion of Typha x glauca, may be contributing to widespread muskrat population declines.
Gregory P. Melvin, Jeff Bowman
wiley   +1 more source

Modeling Trophic Structure and Ecosystem Functioning of the Small Fish‐Dominated Largest Lake of Bangladesh

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
Kaptai Lake is a developing ecosystem with a linear food web and thereby vulnerable to external influences. The apex predator, Catfish (TL‐3.364), occupied the top trophic niches, while the overabundant (B: 3.264 t/km2) Clupeid (TL‐2.56) dominated the lower trophic level in the food web. The higher values of ecotrophic efficiency for most of the groups
Debashis Kumar Mondal   +6 more
wiley   +1 more source

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