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Pregled bibliografske jedinice broj: 620791

Spatiotemporal variation of drift and upstream movements of the amphipod Gammarus fossarum in a small unaltered stream


Žganec, Krešimir; Gottstein, Sanja; Hudina, Sandra
Spatiotemporal variation of drift and upstream movements of the amphipod Gammarus fossarum in a small unaltered stream // Polish journal of ecology, 61 (2013), 4; 777-792 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 620791 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Spatiotemporal variation of drift and upstream movements of the amphipod Gammarus fossarum in a small unaltered stream

Autori
Žganec, Krešimir ; Gottstein, Sanja ; Hudina, Sandra

Izvornik
Polish journal of ecology (1505-2249) 61 (2013), 4; 777-792

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
freshwater; drift; upstream movements; population dynamics; Gammaridae

Sažetak
In addition to active movements upstream against the current, stream invertebrates use ´drift´ or downstream transport in the water column to disperse. These movements have important role in re-colonization of empty stream reaches andin regulation of population size. Additionally, drift represents an important food source for fishes. For more than half a century, research of stream drift was stimulated by the problem of ´drift paradox´, i.e. the question how upstream reaches of streams remain inhabited despite constant and often ample losses of individuals by drift. In this study we examined drift and upstream movements of the amphipod Gammarus fossarum through monthly sampling over one-year period at two sites in the upper and middle course of a small unaltered stream in the northwest Croatia. Differences in tendency to drift and to move upstream and effects of environmental factors (temperature, flow, population density and detritus dry weight) on the movement dynamics on both temporal and spatial scale were examined for three size categories (adults, subadults and juveniles). While seasonal variations of drift and upstream movements were similar at two examined sites, at the downstream site (middle course) we recorded higher density, and higher drift and upstream movement rates. In both drift and upstream movements, adults were the most represented size category. In subadults and juveniles, both type of movements depended on population density. Adult upstream movements peaked in November and May/June, with massive upstream movements in May in the middle course. Seasonality of diurnal and nocturnal drift was very similar at both sites, while seasonality of diel and nocturnal upstream movements differed between the sites. Out of four examined independent environmental factors, density and temperature had the most important positive effect on spatiotemporal variations of diurnal drift, while nocturnal drift was more strongly affected by density and flow. Temperature was the most significant driver of diurnal upstream movements, while nocturnal upstream movements were most significantly affected by density. Massive upstream movements were driven by overcrowding and enabled adults to colonize microhabitats where food is more abundant and competition is less severe.

Izvorni jezik
Engleski

Znanstvena područja
Biologija



POVEZANOST RADA


Projekti:
119-1193080-1231 - Invazivne vrste beskralješnjaka u slatkovodnim ekosustavima Hrvatske (Erben, Radovan, MZOS ) ( POIROT)
119-1193080-3076 - Taksonomija, ekologija i biogeografija beskralješnjaka vodenih ekotona Hrvatske (Kerovec, Mladen, MZOS ) ( POIROT)

Ustanove:
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Sanja Gottstein (autor)

Avatar Url Krešimir Žganec (autor)

Avatar Url Sandra Hudina (autor)


Citiraj ovu publikaciju:

Žganec, Krešimir; Gottstein, Sanja; Hudina, Sandra
Spatiotemporal variation of drift and upstream movements of the amphipod Gammarus fossarum in a small unaltered stream // Polish journal of ecology, 61 (2013), 4; 777-792 (međunarodna recenzija, članak, znanstveni)
Žganec, K., Gottstein, S. & Hudina, S. (2013) Spatiotemporal variation of drift and upstream movements of the amphipod Gammarus fossarum in a small unaltered stream. Polish journal of ecology, 61 (4), 777-792.
@article{article, author = {\v{Z}ganec, Kre\v{s}imir and Gottstein, Sanja and Hudina, Sandra}, year = {2013}, pages = {777-792}, keywords = {freshwater, drift, upstream movements, population dynamics, Gammaridae}, journal = {Polish journal of ecology}, volume = {61}, number = {4}, issn = {1505-2249}, title = {Spatiotemporal variation of drift and upstream movements of the amphipod Gammarus fossarum in a small unaltered stream}, keyword = {freshwater, drift, upstream movements, population dynamics, Gammaridae} }
@article{article, author = {\v{Z}ganec, Kre\v{s}imir and Gottstein, Sanja and Hudina, Sandra}, year = {2013}, pages = {777-792}, keywords = {freshwater, drift, upstream movements, population dynamics, Gammaridae}, journal = {Polish journal of ecology}, volume = {61}, number = {4}, issn = {1505-2249}, title = {Spatiotemporal variation of drift and upstream movements of the amphipod Gammarus fossarum in a small unaltered stream}, keyword = {freshwater, drift, upstream movements, population dynamics, Gammaridae} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka::


  • CAB Abstracts
  • Zoological Record





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