Results 31 to 40 of about 109,267 (311)

At the crossroads: early Miocene marine fishes of the proto-Mediterranean Sea [PDF]

open access: yesFossil Record, 2021
Connectivity and climate control fish distribution today as well as in the geological past. We present here the Aquitanian (early Miocene) marine fish of the Mesohellenic Basin, a restricted basin at the border between the proto-Mediterranean and ...
K. Agiadi   +3 more
doaj   +1 more source

Marinas as habitats for nearshore fish assemblages: comparative analysis of underwater visual census, baited cameras and fish traps [PDF]

open access: yes, 2017
Understanding the ecological role that artificial structures might play on nearshore fish assemblages requires the collection of accurate and reliable data through efficient sampling techniques.
Bosch, Nestor E.   +3 more
core   +3 more sources

Recolonization Process and Fish Assemblage Dynamics in the Guadiamar River (SW Spain) After the Aznalcóllar Mine Toxic Spill [PDF]

open access: yes, 2016
The Guadiamar River (SW Iberian Peninsula) received a major toxic spill (6hm3) from a tailing pond in 1998 that defaunated 67km of the main stem. Following early mud removal works, the fish assemblage was annually monitored at four affected sampling ...
Aguilar   +35 more
core   +1 more source

Typology of Danubian fish assemblages

open access: yesFrontiers in Marine Science, 2015
Environmental management needs well definable management units for the establishment of which typological approaches are often applied. However, inconsistent sampling strategies among countries can hinder large scale evaluation of aquatic assemblages for bioassessment purposes in very large transboundary rivers.
Zoltan, Szaloky   +7 more
openaire   +2 more sources

Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

open access: yesScientia Marina, 2013
In the present study, the seasonal and inter-annual fish assemblage structure of intertidal mudflats of Indian Sundarbans was analysed during tidal cycles.
Atreyee Chaudhuri   +2 more
doaj   +1 more source

Hydrologic and environmental thresholds in stream fish assemblage structure across flow regimes

open access: yesEcological Indicators, 2022
The characteristic pattern of variation in flow magnitude, frequency, duration, timing, and rate of change defines the flow regime of rivers and streams and is a key driver of ecosystem processes in fluvial ecosystems. Understanding how freshwater biotic
J. Tyler Fox, Daniel D. Magoulick
doaj   +1 more source

Parasite assemblages in fish hosts

open access: yesBio-Research, 2010
A review of various factors affecting parasite assemblages in fish hosts is presented. These factors are broadly divided into two: Biotic and abiotic factors. Biotic factors such as host age and size, host size and parasites size, host specificity, host diet and host sex and their influence on the abundance and distribution of parasites are considered ...
Iyaji, F, Etim, L, Eyo, J
openaire   +2 more sources

Phylogenetic community structure: temporal variation in fish assemblage. [PDF]

open access: yesEcol Evol, 2014
AbstractHypotheses about phylogenetic relationships among species allow inferences about the mechanisms that affect species coexistence. Nevertheless, most studies assume that phylogenetic patterns identified are stable over time. We used data on monthly samples of fish from a single lake over 10 years to show that the structure in phylogenetic ...
Santorelli S   +5 more
europepmc   +5 more sources

Distribution of skates and sharks in the North Sea: 112 years of change [PDF]

open access: yes, 2016
How have North Sea skate and shark assemblages changed since the early 20th century when bottom trawling became widespread, whilst their environment became increasingly impacted by fishing, climate change, habitat degradation and other anthropogenic ...
Ellis, JR   +4 more
core   +1 more source

A quantitative assessment of the diel influence on the cryptobenthic fish assemblage of the shallow Mediterranean infralittoral zone

open access: yesScientia Marina, 2020
Cryptobenthic fishes are an underestimated and probably important component of coastal marine ecosystems that are usually overlooked by standard methods for collecting and studying benthic fishes.
Igor Glavičić   +3 more
doaj   +1 more source

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