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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F11%3A10104712%21RIV12-GA0-11310___
rdf:type
n14:Vysledek skos:Concept
rdfs:seeAlso
http://www.springerlink.com/content/u54516j5x062913q/
dcterms:description
Closely related bird species can coexist in areas of range overlap due to differentiation of their ecological niches. If coexisting species have similar habitat requirements, separation of food niches presumably plays a crucial role. Theoretically, two possible food niche separation scenarios are possible: (1) use of different food resources or (2) temporal differences in feeding activity. We examined these mechanisms by investigating the feeding habits of two short-billed sunbirds (Cinnyris reichenowi and C. bouvieri) coexisting locally in the Bamenda Highlands, NW Cameroon. Daily feeding activity in both species showed a similar pattern, with two peaks (0800-0900 hours and 1500-1600 hours, respectively) and a prominent decrease in activity between 1100 and 1400 hours. However, the studied species clearly differed in their exploitation of plant resources. C. bouvieri mostly visited Lobelia columnaris, while C. reichenowi regularly visited three plant species, namely, Hypericum revolutum, Hypoestes aristata and Impatiens sakerana, with the most time spent at the second species. Such resource partitioning was probably caused by interspecific aggressive behaviour, since C. bouvieri actively repelled C. reichenowi from Lobelia columnaris plants, forcing C. reichenowi to feed on other plant species. Closely related bird species can coexist in areas of range overlap due to differentiation of their ecological niches. If coexisting species have similar habitat requirements, separation of food niches presumably plays a crucial role. Theoretically, two possible food niche separation scenarios are possible: (1) use of different food resources or (2) temporal differences in feeding activity. We examined these mechanisms by investigating the feeding habits of two short-billed sunbirds (Cinnyris reichenowi and C. bouvieri) coexisting locally in the Bamenda Highlands, NW Cameroon. Daily feeding activity in both species showed a similar pattern, with two peaks (0800-0900 hours and 1500-1600 hours, respectively) and a prominent decrease in activity between 1100 and 1400 hours. However, the studied species clearly differed in their exploitation of plant resources. C. bouvieri mostly visited Lobelia columnaris, while C. reichenowi regularly visited three plant species, namely, Hypericum revolutum, Hypoestes aristata and Impatiens sakerana, with the most time spent at the second species. Such resource partitioning was probably caused by interspecific aggressive behaviour, since C. bouvieri actively repelled C. reichenowi from Lobelia columnaris plants, forcing C. reichenowi to feed on other plant species.
dcterms:title
Food niche differentiation in two syntopic sunbird species: a case study from the Cameroon Mountains Food niche differentiation in two syntopic sunbird species: a case study from the Cameroon Mountains
skos:prefLabel
Food niche differentiation in two syntopic sunbird species: a case study from the Cameroon Mountains Food niche differentiation in two syntopic sunbird species: a case study from the Cameroon Mountains
skos:notation
RIV/00216208:11310/11:10104712!RIV12-GA0-11310___
n14:predkladatel
n15:orjk%3A11310
n4:aktivita
n7:Z n7:S n7:P
n4:aktivity
P(GAP505/11/1617), P(IAA601410709), P(KJB601110703), P(LC06073), S, Z(MSM6007665801), Z(MSM6007665806)
n4:cisloPeriodika
4
n4:dodaniDat
n8:2012
n4:domaciTvurceVysledku
n13:8513783 n13:6545491 n13:2536447
n4:druhVysledku
n20:J
n4:duvernostUdaju
n22:S
n4:entitaPredkladatele
n19:predkladatel
n4:idSjednocenehoVysledku
200079
n4:idVysledku
RIV/00216208:11310/11:10104712
n4:jazykVysledku
n16:eng
n4:klicovaSlova
Mountains; Cameroon; study; case; species; sunbird; syntopic; two; differentiation; niche; Food
n4:klicoveSlovo
n5:Cameroon n5:two n5:syntopic n5:Food n5:study n5:case n5:niche n5:sunbird n5:species n5:differentiation n5:Mountains
n4:kodStatuVydavatele
DE - Spolková republika Německo
n4:kontrolniKodProRIV
[01DBE877CEA1]
n4:nazevZdroje
Journal of Ornithology
n4:obor
n11:EG
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
7
n4:projekt
n12:GAP505%2F11%2F1617 n12:IAA601410709 n12:KJB601110703 n12:LC06073
n4:rokUplatneniVysledku
n8:2011
n4:svazekPeriodika
152
n4:tvurceVysledku
Hořák, David Sedláček, Ondřej Pešata, Michal Fainová, Drahomíra Riegert, Jan Antczak, Martin Reif, Jiří
n4:wos
000296073300001
n4:zamer
n17:MSM6007665801 n17:MSM6007665806
s:issn
0021-8375
s:numberOfPages
7
n18:doi
10.1007/s10336-011-0650-0
n6:organizacniJednotka
11310