Now showing items 1-20 of 24

  • Assemblage time series reveal biodiversity change but not systematic loss 

    Dornelas, Maria; Gotelli, Nicholas J; McGill, Brian; Shimadzu, Hideyasu; Moyes, Faye; Sievers, Caya; Magurran, Anne E (2014-04-18) - Journal article
    The extent to which biodiversity change in local assemblages contributes to global biodiversity loss is poorly understood. We analyzed 100 time series from biomes across Earth to ask how diversity within assemblages is ...
  • Biological diversity of fish communities : pattern and process 

    Magurran, A. E.; Khachonpisitsak, S.; Ahmad, A. B. (2011-12) - Journal article
    For over 150 years, ecologists have been striving to explain fundamental patterns of biological diversity, such as the observation that communities invariably consist of common and rare species, and to unravel the processes ...
  • Contrasting changes in the abundance and diversity of North American bird assemblages from 1971 to 2010 

    Schipper, Aafke M.; Belmaker, Jonathan; de Miranda, Murilo Dantas; Navarro, Laetitia M.; Böhning-Gaese, Katrin; Costello, Mark J.; Dornelas, Maria; Foppen, Ruud; Hortal, Joaquín; Huijbregts, Mark A.J.; Martín-López, Berta; Pettorelli, Nathalie; Queiroz, Cibele; Rossberg, Axel G.; Santini, Luca; Schiffers, Katja; Steinmann, Zoran J.N.; Visconti, Piero; Rondinini, Carlo; Pereira, Henrique M. (2016-05-12) - Journal article
    Although it is generally recognized that global biodiversity is declining, few studies have examined long-term changes in multiple biodiversity dimensions simultaneously. In this study we quantified and compared temporal ...
  • Direct evidence that density-dependent regulation underpins the temporal stability of abundant species in a diverse animal community 

    Henderson, P.A.; Magurran, A.E. (2014-09-22) - Journal article
    To understand how ecosystems are structured and stabilized, and to identify when communities are at risk of damage or collapse, we need to know how the abundances of the taxa in the entire assemblage vary over ecologically ...
  • Diversity is maintained by seasonal variation in species abundance 

    Shimadzu, Hideyasu; Dornelas, Maria; Henderson, Peter A; Magurran, Anne (2013-09-04) - Journal article
    Background Some of the most marked temporal fluctuations in species abundances are linked to seasons. In theory, multi-species assemblages can persist if species use shared resources at different times, thereby minimizing ...
  • Exotic invaders gain foraging benefits by shoaling with native fish 

    Camacho Cervantes, Morelia; Macias Garcia, Constantino De Jesus; Ojanguren, Alfredo Fernandez; Magurran, Anne (2014-11-19) - Journal article
    Freshwater habitats are under increasing threat due to invasions of exotic fish. These invasions typically begin with the introduction of small numbers of individuals unfamiliar with the new habitat. One way in which the ...
  • Female rose bitterling prefer MHC-dissimilar males : experimental evidence 

    Reichard, Martin; Spence, Rowena Grace Alison; Bryjova, Anna; Bryja, Pepa; Smith, Carl (2012-07-18) - Journal article
    The role of genetic benefits in female mate choice remains a controversial aspect of sexual selection theory. In contrast to “good allele” models of sexual selection, “compatible allele” models of mate choice predict that ...
  • Fitness consequences of female multiple mating : A direct test of indirect benefits 

    Barbosa, Miguel; Connolly, Sean R; Hisano, Mizue; Dornelas, Maria; Magurran, Anne (2012-09-15) - Journal article
    Background The observation that females mate multiply when males provide nothing but sperm - which sexual selection theory suggests is unlikely to be limiting - continues to puzzle evolutionary biologists. Here we test the ...
  • Forced monogamy in a multiply mating species does not impede colonisation success 

    Deacon, A.E.; Barbosa, M.; Magurran, A.E. (2014-06-12) - Journal article
    Background: The guppy (Poecilia reticulata) is a successful invasive species. It is also a species that mates multiply; previous studies have demonstrated that this strategy carries fitness benefits. Guppies are routinely ...
  • From species to communities : the signature of recreational use on a tropical river ecosystem 

    Deacon, Amy Elizabeth; Shimadzu, Hideyasu; Dornelas, Maria; Ramnarine, Indar W.; Magurran, Anne (2015-12) - Journal article
    Disturbance can impact natural communities in multiple ways. However, there has been a tendency to focus on single indicators of change when examining the effects of disturbance. This is problematic as classical diversity ...
  • The geometric mean of relative abundance indices : a biodiversity measure with a difference 

    Buckland, Stephen Terrence; Studeny, Angelika Caroline; Magurran, Anne; Illian, Janine Baerbel; Newson, Stuart (2011-09-02) - Journal article
    The 2010 Biodiversity Target of the Convention on Biological Diversity (CBD), set in 2002, which stated that there should be ‘a significant reduction of the current rate of biodiversity loss' by 2010, highlighted the need ...
  • How reproductive ecology contributes to the spread of a globally invasive fish 

    Deacon, Amy E.; Ramnarine, Indar W.; Magurran, Anne E. (2011-09-19) - Journal article
    Invasive freshwater fish represent a major threat to biodiversity. Here, we first demonstrate the dramatic, human-mediated range expansion of the Trinidadian guppy (Poecilia reticulata), an invasive fish with a reputation ...
  • How selection structures species abundance distributions 

    Magurran, Anne E.; Henderson, Peter A. (2012-09-22) - Journal article
    How do species divide resources to produce the characteristic species abundance distributions seen in nature? One way to resolve this problem is to examine how the biomass (or capacity) of the spatial guilds that combine ...
  • Interspecific synchrony of seabird population growth rate and breeding success 

    Robinson, James P. W.; Dornelas, Maria; Ojanguren, Alfredo Fernandez (2013) - Journal article
    Environmental variability can destabilize communities by causing correlated interspecific fluctuations that weaken the portfolio effect, yet evidence of such a mechanism is rare in natural systems. Here, we ask whether the ...
  • Local and regional rarity in a diverse tropical fish assemblage 

    Hercos, A; Sobansky, M; Queiroz, H; Magurran, Anne (2013-01) - Journal article
    Because most species in an ecological assemblage are rare, much of the species richness we value is due to taxa with few individuals or a restricted distribution. It has been apparent since the time of ecological pioneers ...
  • Mechanical vulnerability explains size-dependent mortality of reef corals 

    Madin, J.S.; Baird, A.H.; Dornelas, M.; Connolly, S.R. (2014-08) - Journal article
    Understanding life history and demographic variation among species within communities is a central ecological goal. Mortality schedules are especially important in ecosystems where disturbance plays a major role in structuring ...
  • Open questions : some unresolved issues in biodiversity 

    Magurran, Anne E. (2013-12-06) - Journal item
  • Quantifying temporal change in biodiversity : challenges and opportunities 

    Dornelas, Maria; Magurran, Anne; Buckland, Stephen Terrence; Chao, Anne; Chazdon, Robin L; Colwell, Robert K; Curtis, Tom; Gaston, Kevin J; Gotelli, Nicolas J; Kosnik, Matthew A; McGill, Brian; McCune, Jenny L; Morlon, Hélène; Mumby, Peter J; Øvreås, Lise; Studeny, Angelika; Vellend, Mark (2013-01-07) - Journal article
    Growing concern about biodiversity loss underscores the need to quantify and understand temporal change. Here, we review the opportunities presented by biodiversity time series, and address three related issues: (i) ...
  • Rapid biotic homogenization of marine fish assemblages 

    Magurran, Anne; Dornelas, Maria; Moyes, Faye Helen; Gotelli, Nicholas J; McGill, Brian (2015-09-24) - Journal article
    The role human activities play in reshaping biodiversity is increasingly apparent in terrestrial ecosystems. However, the responses of entire marine assemblages are not well-understood, in part, because few monitoring ...
  • Reasons for the invasive success of a guppy (Poecilia reticulata) population in Trinidad 

    Sievers, Caya; Willing, Eva-Maria; Hoffmann, Margarete; Dreyer, Christine; Ramnarine, Indar; Magurran, Anne (2012-05-31) - Journal article
    The introduction of non-native species into new habitats poses a major threat to native populations. Of particular interest, though often overlooked, are introductions of populations that are not fully reproductively ...