Results 41 to 50 of about 4,860 (205)

Environmental valuation, ecosystem services and aquatic species [PDF]

open access: yes, 2007
The thesis consists of an introduction and four articles that can be read independently of each other. The common topic is environmental valuation and cost-benefit analysis.
Kataria, Mitesh
core  

The impacts of biological invasions

open access: yesBiological Reviews, EarlyView.
ABSTRACT The Anthropocene is characterised by a continuous human‐mediated reshuffling of the distributions of species globally. Both intentional and unintentional introductions have resulted in numerous species being translocated beyond their native ranges, often leading to their establishment and subsequent spread – a process referred to as biological
Phillip J. Haubrock   +42 more
wiley   +1 more source

The distribution of native and introduced species of crayfish in Austria [PDF]

open access: yes, 1999
This account concentrates on the six species of crayfish found in Austria, and the current state of knowledge on their distribution and laws affecting conservation.
Pockl, Manfred
core  

Investigating the genetic and epigenetic basis of big biological questions with the new crayfish model Procambarus virginalis [PDF]

open access: yes, 2017
In the last 15 years considerable attempts have been undertaken to develop the obligately parthenogenetic marbled crayfish Procambarus virginalis as a new model in biology.
Vogt, Günter
core   +1 more source

Food Contamination and Safety in Nigeria: A Systematic Synthesis of Heavy Metals, Microbial Pathogens, and Health Risk Metrics

open access: yesFood Safety and Health, EarlyView.
This is an infographic driver of food contaminants and health effects. ABSTRACT Food safety remains a critical challenge in Nigeria due to rapid urbanization and weak regulatory enforcement. This systematic review synthesizes empirical evidence from 2015 to 2025 to characterize food contaminant profiles and associated human health risks in Nigeria ...
Cecilia Nwadiuto Obasi   +6 more
wiley   +1 more source

GENETIC DIFFERENCES AMONG NOBLE CRAYFISH (ASTACUS ASTACUS) STOCKS IN FINLAND, SWEDEN AND ESTONIA BASED ON THE ITS1 REGION

open access: yesKnowledge and Management of Aquatic Ecosystems, 2006
Noble crayfish (Astacus astacus) is indigenous to Finland. The distribution of A. astacus has diminished dramatically during the past century, due to environmental changes, crayfish plague (Aphanomyces astaci) outbreaks and stocking of alien signal ...
ALARANTA A.   +6 more
doaj   +1 more source

Assessing the Presence, Pattern, and Environmental Correlates of Seasonal Skin Thickening in Anurans

open access: yesIntegrative Zoology, EarlyView.
Histological sections, like that of the ventral pectoral skin of Lithobates pipiens, were measured to assess variation in skin thickness throughout the year in three North American anuran species. After correcting for individual body size, we test whether skin thickness changes throughout the year and which factors (environment or life history) explain
Collin S. VanBuren   +3 more
wiley   +1 more source

The Effects of Noise on the Juvenile Life Stage of Crustaceans: Behavioral, Cellular, and Molecular Responses in Procambarus clarkii

open access: yesIntegrative Zoology, EarlyView.
Juvenile Procambarus clarkii exposed to noise exhibited behavioral changes, shifts in enzymatic activity, and altered expression of stress and immune genes. The findings highlight the sensitivity of invertebrate juveniles to anthropogenic acoustic pollution.
Maria Ceraulo   +8 more
wiley   +1 more source

Morphological variability and sexual dimorphism of noble crayfish Astacus astacus from the Balkana Lake [PDF]

open access: yesBulletin of Natural Sciences Research, 2020
This paper presents the information about morphological variability and sex dimorphism of the Noble crayfish (Astacus astacus) in the area of the Balkana Lake in Mrkonjic Grad.
Roljić Rajko   +2 more
doaj  

Phylogenetically‐Informed Crayfish Conservation in the Face of Climate Change

open access: yesAnimal Conservation, EarlyView.
Crayfish are a vital part of freshwater ecosystems, yet one third of assessed species are threatened with extinction, and almost 90% are highly sensitive to climate change. In this study, we produced a phylogenetically‐informed species prioritisation for crayfish conservation and explored the impacts of projected climate change scenarios on crayfish ...
Sebastian Pipins   +6 more
wiley   +1 more source

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