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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F07%3A00022490%21RIV10-MSM-14310___
rdf:type
skos:Concept n8:Vysledek
dcterms:description
Populations of Erpobdella octoculata and E. vilnensis were studied monthly over two years (May 1999 - April 2001) at four sampling points on the river Rokytná (Czech Republic). The water depth and velocity were measured and the Froude number for each sample was calculated to follow flow conditions above the bottom. Temporal differences in biomass of the two species were studied by comparing their wet weights and evaluated by the time series analysis; differences in their diets were evaluated by gut content analyses. Significantly different hydrodynamic preferences for juvenile and adult stages of E. octoculata and E. vilnensis were recorded. In E. vilnensis only, an annual cycle was recorded with a one-month shift of mean weights compared to E. octoculata. This shift, together with the correlation of the leeches' wet weights with their prey sizes and their distinct habitat preferences are suggested as mechanisms that explain their coexistence. Populations of Erpobdella octoculata and E. vilnensis were studied monthly over two years (May 1999 - April 2001) at four sampling points on the river Rokytná (Czech Republic). The water depth and velocity were measured and the Froude number for each sample was calculated to follow flow conditions above the bottom. Temporal differences in biomass of the two species were studied by comparing their wet weights and evaluated by the time series analysis; differences in their diets were evaluated by gut content analyses. Significantly different hydrodynamic preferences for juvenile and adult stages of E. octoculata and E. vilnensis were recorded. In E. vilnensis only, an annual cycle was recorded with a one-month shift of mean weights compared to E. octoculata. This shift, together with the correlation of the leeches' wet weights with their prey sizes and their distinct habitat preferences are suggested as mechanisms that explain their coexistence.
dcterms:title
Strategies of coexistence of two species: Erpobdella octoculata and E. vilnensis (Hirudinea: Erpobdellidae) Strategies of coexistence of two species: Erpobdella octoculata and E. vilnensis (Hirudinea: Erpobdellidae)
skos:prefLabel
Strategies of coexistence of two species: Erpobdella octoculata and E. vilnensis (Hirudinea: Erpobdellidae) Strategies of coexistence of two species: Erpobdella octoculata and E. vilnensis (Hirudinea: Erpobdellidae)
skos:notation
RIV/00216224:14310/07:00022490!RIV10-MSM-14310___
n3:aktivita
n9:Z
n3:aktivity
Z(MSM0021622412), Z(MSM0021622416)
n3:cisloPeriodika
4-5
n3:dodaniDat
n6:2010
n3:domaciTvurceVysledku
n16:2820714 n16:9622128 n16:9478426
n3:druhVysledku
n15:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
452649
n3:idVysledku
RIV/00216224:14310/07:00022490
n3:jazykVysledku
n17:eng
n3:klicovaSlova
seasonal dynamics; habitat preferences; diet
n3:klicoveSlovo
n7:diet n7:habitat%20preferences n7:seasonal%20dynamics
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[5089FF553B4A]
n3:nazevZdroje
International Review of Hydrobiology
n3:obor
n11:EH
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n6:2007
n3:svazekPeriodika
92
n3:tvurceVysledku
Jarkovský, Jiří Helešic, Jan Schenková, Jana
n3:zamer
n18:MSM0021622412 n18:MSM0021622416
s:issn
1434-2944
s:numberOfPages
12
n5:organizacniJednotka
14310