Consulta: subjectFacets:"Species distribution models"
Registros recuperados: 12
Data/hora: 08/06/2024 09:38:25

Modelos bayesianos para la distribución de especies con registros de solo presencias.
Provedor de dados: 32
Autores: Villar Hernández, Bartolo de Jesús.
Uno de los temas centrales en ecología es el estudio de la distribución geográfica de especies tanto de flora como de fauna a través de Modelos de Distribución de Especies (MDE). Recientemente el interés científico se ha centrado en aquellos registros de solo presencias. Dos enfoques recientes se han propuesto para este problema: un modelo logístico estimado por máxima verosimilitud (Maxlike) y un modelo basado en un proceso Poisson no homogéneo (IPP). En este trabajo se discuten dos enfoques bayesianos denominados MaxBayes e IPPBayes construidos en base a los anteriores. Para ilustrar dichas propuestas, se implementaron dos ejemplos de estudio: (1) se implementaron ambos modelos en un conjunto de datos simulados, y (2) se modeló la distribución potencial...
Palavras-chave: Registros de solo presencia; Modelos de distribución de especies; Probabilidad de ocurrencia; Proceso Poisson no homogéneo; Maxlike; Maxent; Enfoque bayesiano; Only-presence records; Species distribution models; Ocurrence probability; Inhomogeneous poisson procces; Bayesian approach; Estadística; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2337

FishMed: traits, phylogeny, current and projected species distribution of Mediterranean fishes, and environmental data
Provedor de dados: 5
Autores: Albouy, Camille; Lasram, Frida Ben Rais; Velez, Laure; Guilhaumon, François; Meynard, Christine N.; Boyer, Séverine; Benestan, Laura; Mouquet, Nicolas; Douzery, Emmanuel; Aznar, Roland; Troussellier, Marc; Somot, Samuel; Leprieur, Fabien; Le Loc'H, François; Mouillot, David.
The FishMed database provides traits, phylogeny, current and projected species distribution of Mediterranean fishes, and associated sea surface temperature (SST) from the regional oceanic model NEMOMED8. Data for the current geographical distributions of 635 Mediterranean fish species were compiled from a published expert knowledge atlas of fishes of the northern Atlantic and the Mediterranean (FNAM) edited between 1984 and 1986 and from an updated exotic fish species list. Two future sets of projected species distributions were obtained for the middle and end of the 21st century by using an ensemble forecasting approach for 288 coastal Mediterranean fish species based on SST according to the IPPC/SRES A2 scenario implemented with the Mediterranean...
Tipo: Text
Palavras-chave: Climate change; Coastal fishes; Functional diversity; Mediterranean fish species; Mediterranean Sea; NEMOMED8; Phylogenetic diversity; Species distribution models; Taxonomic diversity.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00371/48216/48341.pdf

Detecting outliers in species distribution data: Some caveats and clarifications on a virtual species study
Provedor de dados: 5
Autores: Meynard, Christine N.; Kaplan, David; Leroy, Boris.
Liu et al. (2018) used a virtual species approach to test the effects of outliers on species distribution models. In their simulations, they applied a threshold value over the simulated suitabilities to generate the species distributions, suggesting that using a probabilistic simulation approach would have been more complex and yield the same results. Here, we argue that using a probabilistic approach is not necessarily more complex and may significantly change results. Although the threshold approach may be justified under limited circumstances, the probabilistic approach has multiple advantages. First, it is in line with ecological theory, which largely assumes non‐threshold responses. Second, it is more general, as it includes the threshold as a...
Tipo: Text
Palavras-chave: ENM; Observation errors; Outliers; Prevalence; Probabilistic approach; Sample bias; Simulations; Species distribution models; Virtual ecology; Virtual species.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00501/61309/64868.pdf

European small pelagic fish distribution under global change scenarios
Provedor de dados: 5
Autores: Schickele, Alexandre; Goberville, Eric; Leroy, Boris; Beaugrand, Gregory; Hattab, Tarek; Francour, Patrice; Raybaud, Virginie.
The spectre of increasing impacts on exploited fish stocks in consequence of warmer climate conditions has become a major concern over the last decades. It is now imperative to improve the way we project the effects of future climate warming on fisheries. While estimating future climate‐induced changes in fish distribution is an important contribution to sustainable resource management, the impacts on European small pelagic fish—representing over 50% of the landings in the Mediterranean and Black Sea between 2000 and 2013—are yet largely understudied. Here, we investigated potential changes in the spatial distribution of seven of the most harvested small pelagic fish species in Europe under several climate change scenarios over the 21st century. For each...
Tipo: Text
Palavras-chave: Climate change; Ecological niche; Exclusive economic zone; Range shift; Species distribution models; Uncertainties.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00656/76801/77966.pdf

Climate‐induced changes in the suitable habitat of cold‐water corals and commercially important deep‐sea fishes in the North Atlantic
Provedor de dados: 5
Autores: Morato, Telmo; González‐irusta, José‐manuel; Dominguez‐carrió, Carlos; Wei, Chih‐lin; Davies, Andrew; Sweetman, Andrew K.; Taranto, Gerald H.; Beazley, Lindsay; García‐alegre, Ana; Grehan, Anthony; Laffargue, Pascal; Murillo, Francisco Javier; Sacau, Mar; Vaz, Sandrine; Kenchington, Ellen; Arnaud-haond, Sophie; Callery, Oisín; Chimienti, Giovanni; Cordes, Erik; Egilsdottir, Hronn; Freiwald, André; Gasbarro, Ryan; Gutiérrez‐zárate, Cristina; Gianni, Matthew; Gilkinson, Kent; Wareham Hayes, Vonda E.; Hebbeln, Dierk; Hedges, Kevin; Henry, Lea‐anne; Johnson, David; Koen‐alonso, Mariano; Lirette, Cam; Mastrototaro, Francesco; Menot, Lenaick; Molodtsova, Tina; Durán Muñoz, Pablo; Orejas, Covadonga; Pennino, Maria Grazia; Puerta, Patricia; Ragnarsson, Stefán Á.; Ramiro‐sánchez, Berta; Rice, Jake; Rivera, Jesús; Roberts, J. Murray; Ross, Steve W.; Rueda, José L.; Sampaio, Íris; Snelgrove, Paul; Stirling, David; Treble, Margaret A.; Urra, Javier; Vad, Johanne; Oevelen, Dick; Watling, Les; Walkusz, Wojciech; Wienberg, Claudia; Woillez, Mathieu; Levin, Lisa A.; Carreiro‐silva, Marina.
The deep sea plays a critical role in global climate regulation through uptake and storage of heat and carbon dioxide. However, this regulating service causes warming, acidification and deoxygenation of deep waters, leading to decreased food availability at the seafloor. These changes and their projections are likely to affect productivity, biodiversity and distributions of deep‐sea fauna, thereby compromising key ecosystem services. Understanding how climate change can lead to shifts in deep‐sea species distributions is critically important in developing management measures. We used environmental niche modelling along with the best available species occurrence data and environmental parameters to model habitat suitability for key cold‐water coral and...
Tipo: Text
Palavras-chave: Climate change; Cold-water corals; Deep-sea; Fisheries; Fishes; Habitat suitability modelling; Octocorals; Scleractinians; Species distribution models; Vulnerable marine ecosystems.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00610/72211/71007.pdf

Responses of coral reef fishes to past climate changes are related to life-history traits
Provedor de dados: 5
Autores: Ottimofiore, Eduardo; Albouy, Camille; Leprieur, Fabien; Descombes, Patrice; Kulbicki, Michel; Mouillot, David; Parravicini, Valeriano; Pellissier, Loic.
Coral reefs and their associated fauna are largely impacted by ongoing climate change. Unravelling species responses to past climatic variations might provide clues on the consequence of ongoing changes. Here, we tested the relationship between changes in sea surface temperature and sea levels during the Quaternary and present-day distributions of coral reef fish species. We investigated whether species-specific responses are associated with life-history traits. We collected a database of coral reef fish distribution together with life-history traits for the Indo-Pacific Ocean. We ran species distribution models (SDMs) on 3,725 tropical reef fish species using contemporary environmental factors together with a variable describing isolation from stable...
Tipo: Text
Palavras-chave: Climate change; Dispersal; Indo-Pacific Ocean; Species distribution models.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00373/48403/48607.pdf

The DIARS toolbox: a spatially explicit approach to monitor alien plant invasions through remote sensing
Provedor de dados: 5
Autores: Garzon-lopez, Carol X.; Hattab, Tarek; Skowronek, Sandra; Aerts, Raf; Ewald, Michael; Feilhauer, Hannes; Honnay, Olivier; Decocq, Guillaume; Van De Kerchove, Ruben; Somers, Ben; Schmidtlein, Sebastian; Rocchini, Duccio; Lenoir, Jonathan.
The synergies between remote sensing technologies and ecological research have opened new avenues for the study of alien plant invasions worldwide. Such scientific advances have greatly improved our capacity to issue warnings, develop early-response systems and assess the impacts of alien plant invasions on biodiversity and ecosystem functioning. Hitherto, practical applications of remote sensing approaches to support nature conservation actions are lagging far behind scientific advances. Yet, for some of these technologies, knowledge transfer is difficult due to the complexity of the different data handling procedures and the huge amounts of data it involves per spatial unit. In this context, the next logical step is to develop clear guidelines for the...
Tipo: Text
Palavras-chave: Biological invasions; Ecosystem impact; Hyperspectral images; LiDAR; Species detection and mapping; Species distribution models.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00435/54645/56071.pdf

Modelling the spatial distribution of cetaceans in New Zealand waters
Provedor de dados: 5
Autores: Stephenson, Fabrice; Goetz, Kimberly; Sharp, Ben R.; Mouton, Theophile; Beets, Fenna L.; Roberts, Jim; Macdiarmid, Alison B.; Constantine, Rochelle; Lundquist, Carolyn J.; Sarmento Cabral, Juliano.
Aim Cetaceans are inherently difficult to study due to their elusive, pelagic and often highly migratory nature. New Zealand waters are home to 50% of the world's cetacean species, but their spatial distributions are poorly known. Here, we model distributions of 30 cetacean taxa using an extensive at‐sea sightings dataset (n &gt; 14,000) and high‐resolution (1 km2) environmental data layers. Location New Zealand's Exclusive Economic Zone (EEZ). Methods Two models were used to predict probability of species occurrence based on available sightings records. For taxa with &lt;50 sightings (n = 15), Relative Environmental Suitability (RES), and for taxa with ≥50 sightings (n = 15), Boosted Regression Tree (BRT) models were used. Independently collected...
Tipo: Text
Palavras-chave: Boosted regression tree models; Cetacean distribution; New Zealand; Relative environmental suitability models; Spatial management; Species distribution models.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00606/71827/70345.pdf

More on the Mesopotamian-Yungas disjunction in subtropical and temperate Argentina: Bioclimatic distribution models of the harvestman Discocyrtus dilatatus (Opiliones: Gonyleptidae)
Provedor de dados: 103
Autores: Vergara,Julia; Acosta,Luis E.
ABSTRACT In this paper, the potential distribution of the Mesopotamian harvestman Discocyrtus dilatatus Sørensen, 1884 is modeled, and the species' bioclimatic profile is described. Models were built with the presence-only methods Maxent and Bioclim, using 85 unique records (of which 49 are new) and 11 non-correlated bioclimatic variables as predictors. Both Maxent and Bioclim supported the Mesopotamian-Yungas disjunct pattern observed in D. dilatatus, and confirmed the hypothesis that the sub-xeric Dry Chaco is an effective barrier for the two portions of the range. Similarly to results of previous studies on other Mesopotamian harvestmen, temperature variables proved more relevant than precipitation variables in the final models. In the combined overall...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioclim; Bioclimatic profile; Maxent; Most limiting factor; Species distribution models.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000600445

Geographic distribution model for Mabuya agmosticha (Squamata: Scincidae) in northeastern Brazil
Provedor de dados: 103
Autores: Sales,Raul F.D.; Andrade,Maria J.M. de; Jorge,Jaqueiuto da S.; Kolodiuk,Miguel F.; Ribeiro,Matheus M.; Freire,Eliza M.X.
The Neotropical lizard Mabuya agmosticha Rodrigues, 2000 is a habitat-specialist of thorny bromeliads in rocky outcrops of northeastern Brazil. Its distribution in the Caatinga Domain is most likely relictual. In recent years, new surveys conducted in northeastern Brazil have revealed new records of the species in the Caatinga and also in the Atlantic Forest Domain. In this study, we add four new records for M. agmosticha, extending its known geographic range in the states of Rio Grande do Norte and Paraíba. In addition, we investigated the potential geographical distribution of the species using ecological niche modeling (ENM), which combines the available occurrence records with environmental variables. Our model revealed a continuous range of areas with...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Biogeography; Caatinga; Lizards; Skinks; Species distribution models.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000100071

POTENTIAL SPECIES RICHNESS OF FROGS AND DIURNAL BUTTERFLIES IN THREE BIOGEOGRAPHICAL UNITS FROM NORTHEASTERN COLOMBIA: CONSERVATION IMPLICATIONS
Provedor de dados: 37
Autores: ACEVEDO,Aldemar A.; ARMESTO SANGUINO,Orlando; OLARTE QUIÑÓNEZ,Camilo Andrés; SOLANO,Liliana; ALBORNOZ ESPINEL,Mónica María; CABRERA,James Alexis; CARRERO SARMIENTO,Diego Armando.
ABSTRACT We present an estimation of the potential species richness of frogs, and diurnal butterflies distributed in the departments of Norte de Santander and Santander, Colombia, and analyze the implications for conservation of such high Andean species. From June 2012 to May 2016, we sampled across the Almorzadero, Santurbán and Tamá biogeographical units to gather presence data of 7 anuran species and 29 butterflies species from the superfamily Papilionoidea. We modeled the potential distribution of each species, converted every model to binary, and the sum up of unique species per cell allowed to estimate the model of potential richness, generating the total number of species for every 1 km2 cell. Every model was validated against field data, vegetation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogeography; Biological diversity; Conservation; High Andean species; Species distribution models.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000200151

Using distribution models to estimate blooms of phytosanitary cyanobacteria in Brazil
Provedor de dados: 49
Autores: Guimarães,Ariane; Silva,Pablo Henrique da; Carneiro,Fernanda Melo; Silva,Daniel Paiva.
Abstract: The multiple uses of aquatic ecosystems by humankind and the continuous interference of their activities have contributed to the emergence of potentially toxic cyanobacteria blooms. Here, we firstly created a database of occurrences of cyanobacteria blooms in Brazil through a systematic review of the scientific literature available in online platforms (e.g. Web of Science, Capes Thesis Catalogue). Secondly, we carried out ecological niche models with occurrence data obtained from these studies to predict climatically suitable areas for blooms. We select 21 bioclimatic variables input environmental data. We used five modeling methods for the current climate scenario: (1) Maxent; (2) Support Vector Machines; (3) Random Forest; (4) Maximum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freshwater ecosystems; Species distribution models; Bloom occurrence; Cyanobacteria.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000200202