Drivers of Interspecific Spatial Segregation in Two Closely-Related Seabird Species at a Pan-Atlantic Scale

被引：0

作者：

Bonnet-Lebrun, Anne-Sophie ^{[1
,2
]}

Matthiopoulos, Jason ^{[3
]}

Lemaire-Patin, Remi ^{[4
]}

Deville, Tanguy ^{[1
]}

Barrett, Robert ^{[5
]}

Bogdanova, Maria I. ^{[6
]}

Bolton, Mark ^{[7
]}

Christensen-Dalsgaard, Signe ^{[8
]}

Daunt, Francis ^{[6
]}

Dehnhard, Nina ^{[8
]}

Descamps, Sebastien ^{[9
]}

Elliott, Kyle ^{[10
]}

Erikstad, Kjell Einar ^{[11
]}

Frederiksen, Morten ^{[12
]}

Gilchrist, Grant ^{[13
]}

Harris, Mike ^{[6
]}

Kolbeinsson, Yann ^{[14
]}

Linnebjerg, Jannie Fries ^{[12
]}

Lorentsen, Svein-Hakon ^{[8
]}

Mallory, Mark ^{[15
]}

Merkel, Flemming ^{[12
,16
]}

Mosbech, Anders ^{[12
]}

Owen, Ellie ^{[17
,18
]}

Patterson, Allison ^{[10
]}

Pratte, Isabeau ^{[15
]}

Strom, Hallvard ^{[9
]}

thorn orarinsson, thorn orkell Lindberg ^{[14
]}

Wanless, Sarah ^{[6
]}

Ratcliffe, Norman ^{[1
]}

机构：

[1] British Antarctic Survey, Cambridge, England

[2] La Rochelle Univ, CNRS, Ctr Etud Biol Chize, UMR7372, Villiers En Bois, France

[3] Univ Glasgow, Sch Biodivers One Hlth & Vet Med, Glasgow City, Scotland

[4] INRAE, Bordeaux Sci Agro, Villenave Dornon, France

[5] Tromso Univ Museum, Dept Nat Sci, Tromso, Norway

[6] UK Ctr Ecol & Hydrol, Penicuik, England

[7] RSPB Ctr Conservat Sci, Aberdeen, Scotland

[8] Norwegian Inst Nat Res NINA, Trondheim, Norway

[9] Fram Ctr, Norwegian Polar Inst, Tromso, Norway

[10] McGill Univ, Dept Nat Resource Sci, Ste Anne De Bellevue, PQ, Canada

[11] Norwegian Inst Nat Res NINA, FRAM High North Res Ctr Climate & Environm, Tromso, Norway

[12] Aarhus Univ, Dept Ecosci, Roskilde, Denmark

[13] Natl Wildlife Res Ctr, Environm & Climate Change Canada, Ottawa, ON, Canada

[14] Northeast Iceland Nat Res Ctr, Husavik, Iceland

[15] Acadia Univ, Biol, Wolfville, NS, Canada

[16] Greenland Inst Nat Resources, Nuuk, Greenland

[17] Natl Trust Scotland, Inverness, Scotland

[18] RSPB Ctr Conservat Sci, Inverness, Scotland

来源：

JOURNAL OF BIOGEOGRAPHY | 2025年 / 52卷 / 02期

基金：

英国自然环境研究理事会; 加拿大自然科学与工程研究理事会;

关键词：

generalised functional response; interspecific competition; niche; spatial segregation; <italic>Uria aalge</italic>; <italic>Uria lomvia</italic>; THICK-BILLED MURRES; URIA-AALGE; ECOLOGICAL RELATIONSHIPS; BRUNNICHS GUILLEMOTS; COMMON MURRES; GANNET ISLANDS; U-LOMVIA; SEA-ICE; AREAS; DIET;

D O I：

10.1111/jbi.15042

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

AimEcologically similar species living in sympatry are expected to segregate to reduce the effects of competition where resources are limiting. Segregation from heterospecifics commonly occurs in space, but it is often unknown whether such segregation has underlying environmental causes. Indeed, species could segregate because of different fundamental environmental requirements (i.e., 'niche divergence'), because competitive exclusion at sympatric sites can force species to either change the habitat use they would have at allopatric sites (i.e., 'niche displacement') or to avoid certain areas, independently of habitat (i.e., 'spatial avoidance'). Testing these hypotheses requires the comparison between sympatric and allopatric sites. Understanding the competitive mechanisms that underlie patterns of spatial segregation could improve predictions of species responses to environmental change, as competition might exacerbate the effects of environmental change.LocationNorth Atlantic and Arctic.TaxaCommon guillemots Uria aalge and Br & uuml;nnich's guillemots Uria lomvia.MethodsHere, we examine support for these explanations for spatial segregation in two closely-related seabird species, common guillemots (Uria aalge) and Br & uuml;nnich's guillemots (U. lomvia). For this, we collated a pan-Atlantic data set of breeding season foraging tracks from 1046 individuals, collected from 20 colonies (8 sympatric and 12 allopatric). These were analysed with habitat models in a spatially transferable framework to compare habitat preferences between species at sympatric and allopatric sites.ResultsWe found no effect of the distribution of heterospecifics on local habitat preferences of the focal species. We found differences in habitat preferences between species, but these were not sufficient to explain the observed levels of spatial segregation at sympatric sites.Main ConclusionsAssuming we did not omit any relevant environmental variables, these results suggest a mix of niche divergence and spatial avoidance produces the observed patterns of spatial segregation.

引用

页码：408 / 421

页数：14

共 43 条

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