Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloPatchiness of forest landscape can predict species distribution better than abundance: The case of a forest-dwelling passerine, the short-toed treecreeper, in central Italy
Anno di pubblicazione2016
FormatoCartaceo
Autore/iBasile M.; Valerio F.; Balestrieri R.; Posillico M.; Bucci R.; Altea T.; De Cinti B.; Matteucci G.
Affiliazioni autoriIstituto di Biologia Agroambientale e Forestale, Consiglio Nazionale delle Ricerche, Monterotondo Scalo, , Italy; Coordinamento MItO2000, Parma, , Italy; Chair of Wildlife Ecology and Management, Albert-Ludwigs-Universität Freiburg, Freiburg, , Germany; CIBIO/InBIO-UE-Research Center in Biodiversity and Genetic Resources, Pole of évora Applied Population and Community Ecology Laboratory, University of évora UBC-Conservation Biology Lab, Department of Biology, Évora, , , Portugal; CIBIO/InBIO-UE-Research Center in Biodiversity and Genetic Resources, Pole of évora Applied Population and Community Ecology Laboratory, University of évora UBC-Conservation Biology Lab, Department of Biology, Évora, , , Portugal; Ufficio Territoriale Biodiversità di Castel di Sangro-Centro Ricerche Ambienti Montani, Corpo Forestale dello Stato, Castel di Sangro, , Italy; Istituto per i Sistemi Agricoli e Forestali del Mediterraneo, Consiglio Nazionale delle Ricerche, Ercolano (Na), , , Italy; Istituto per i Sistemi Agricoli e Forestali del Mediterraneo, Consiglio Nazionale delle Ricerche, Ercolano (Na), , , Italy
Autori CNR e affiliazioni
  • GIORGIO MATTEUCCI
Lingua/e
  • inglese
AbstractEnvironmental heterogeneity affects not only the distribution of a species but also its local abundance. High heterogeneity due to habitat alteration and fragmentation can influence the realized niche of a species, lowering habitat suitability as well as reducing local abundance. We investigate whether a relationship exists between habitat suitability and abundance and whether both are affected by fragmentation. Our aim was to assess the predictive power of such a relationship to derive advice for environmental management. As a model species we used a forest specialist, the shorttoed treecreeper (Family: Certhiidae; Certhia brachydactyla Brehm, 1820), and sampled it in central Italy. Species distribution was modelled as a function of forest structure, productivity and fragmentation, while abundance was directly estimated in two central Italian forest stands. Different algorithms were implemented to model species distribution, employing 170 occurrence points provided mostly by the MITO2000 database: an artificial neural network, classification tree analysis, flexible discriminant analysis, generalized boosting models, generalized linear models, multivariate additive regression splines, maximum entropy and random forests. Abundance was estimated also considering detectability, through N-mixture models. Differences between forest stands in both abundance and habitat suitability were assessed as well as the existence of a relationship. Simpler algorithms resulted in higher goodness of fit than complex ones. Fragmentation was highly influential in determining potential distribution. Local abundance and habitat suitability differed significantly between the two forest stands, which were also significantly different in the degree of fragmentation. Regression showed that suitability has a weak significant effect in explaining increasing value of abundance. In particular, local abundances varied both at low and high suitability values. The study lends support to the concept that the degree of fragmentation can contribute to alter not only the suitability of an area for a species, but also its abundance. Even if the relationship between suitability and abundance can be used as an early warning of habitat deterioration, its weak predictive power needs further research. However, we define relationships between a species and some landscape features (i.e., fragmentation, extensive rejuvenation of forests and tree plantations) which could be easily controlled by appropriate forest management planning to enhance environmental suitability, at least in an area possessing high conservation and biodiversity values.
Lingua abstractinglese
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RivistaPeerJ
Lingua: inglese
ISSN: 2167-8359
Titolo chiave: PeerJ
Numero volume della rivista2016
Fascicolo della rivista9
DOI10.7717/peerj.2398
Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)
  • Scopus (Codice:2-s2.0-84991687975)
Parole chiaveFragmentation, Heterogeneity, Management, Quantile regression, SDM
Link (URL, URI)http://www.scopus.com/inward/record.url?eid=2-s2.0-84991687975&partnerID=q2rCbXpz
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Strutture CNR
  • ISAFoM — Istituto per i sistemi agricoli e forestali del mediterraneo
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