Results 81 to 90 of about 39,909 (252)

Oxidative Stress Biomarkers in the Shrimp Macrobrachium amazonicum (Heller, 1862): Assessment in an Environmental Preservation Area in the Brazilian Amazon

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Anthropogenic activities generate a significant amount of pollutants that are released into the environment, causing physiological and ecological disturbances. Among the xenobiotics present in aquatic ecosystems, numerous chemical and organic compounds have oxidative potential or are metabolized through oxidative processes, which may amplify ...
Natália Eduarda da Silva   +6 more
wiley   +1 more source

From the individual to the community and beyond: water quality, stress indicators and key species in coastal waters [PDF]

open access: yes, 1994
This review examines water quality and stress indicators at levels of organisation from the individual to the community and beyond by means of three case studies concentrating on rocky shores within the north-east Atlantic.
Hawkins, S.J.   +3 more
core  

Elevation reverses the effects of forest structure on folivory and leaf asymmetry

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Centuries of timber production have homogenized many forests by reducing variation in canopy density and deadwood availability, with far‐reaching consequences for biodiversity and trophic interactions.
Soumen Mallick   +13 more
wiley   +1 more source

Dominant Meristic Traits of Fish and Their Association with Habitat Water Quality Parameters: A Case Study

open access: yesFishes
Fish morphological traits are increasingly recognized as sensitive bioindicators of aquatic ecosystem quality. This study investigated the associations between dominant meristic traits, which are a subset of morphological features of six common ...
Olha Biedunkova   +7 more
doaj   +1 more source

A Dangerous Prey Fish? <i>Brachyspira</i>-Rich Gastrointestinal Microbiota in Pompano Dolphinfish From Neritic and Deep Waters of the South China Sea. [PDF]

open access: yesEcol Evol
This study reveals an unexpectedly simplified, Brachyspira‐dominated gastrointestinal microbiota in pompano dolphinfish from both neritic and deep‐sea habitats of the South China Sea. Environmental DNA and functional analyses suggest these fish may acquire potential pathogens in anthropogenically influenced coastal waters and transport them offshore ...
Lu W   +12 more
europepmc   +2 more sources

Assessment of the water quality of ten Waikato lakes based on zooplankton community composition. CBER Contract Report No. 60 [PDF]

open access: yes, 2007
Zooplankton communities were documented from ten Waikato lakes from net haul samples collected in late 2006 and from species hatched from diapausing eggs in sediments collected in early 2007.
Duggan, Ian C.
core   +1 more source

Taxonomic and functional diversity of noctuoid moths in a Mediterranean coastal area: implications for dune conservation in a long‐term ecological research eLTER site

open access: yesInsect Science, EarlyView.
This study investigates the taxonomic and functional diversity of noctuoid moths in a protected coastal dune system in Central Italy, revealing strong ecological associations between moth assemblages and dune zonation. Differences in species composition and trait attributes, along with the presence of habitat‐exclusive species, highlight the role of ...
Micaela del Valle Rasino   +5 more
wiley   +1 more source

Soil macrofauna in a Cerrado/Caatinga ecotone under different crops in Southwestern Piauí State, Brazil

open access: yesCiência Rural, 2017
: The aim of this study was to characterize the soil macrofauna under different crop systems and compare them to the macrofauna under the native vegetation of a Cerrado/Caatinga ecotone in southwestern Piauí State, Brazil.
Djavan Pinheiro Santos   +4 more
doaj   +1 more source

Social Indicators for Arctic Mining [PDF]

open access: yes, 2011
This paper reviews and assesses the state of the data to describe and monitor mining trends in the pan-Arctic. It constructs a mining index and discusses its value as a social impact indicator and discusses drivers of change in Arctic mining.
Crow, Andrew   +4 more
core  

Museomics Deciphers the Phylogeographic Differentiation and Conservation Status of a Montane Pheasant

open access: yesIntegrative Zoology, EarlyView.
Museum specimens provide a rich source of historical DNA, enabling insights into phylogenetic relationships and demographic history of the endangered Koklass Pheasant. Our findings uncovered a previously unrecognized population in Guizhou province and highlighted elevated extinction risk in populations from Anhui province and Southern China, informing ...
Zhiyong Jiang   +9 more
wiley   +1 more source

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