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| Juhel, Jean-baptiste; Utama, Rizkie S.; Marques, Virginie; Vimono, Indra B.; Sugeha, Hagi Yulia; Kadarusman,; Pouyaud, Laurent; Dejean, Tony; Mouillot, David; Hocdé, Régis. |
| Environmental DNA (eDNA) has the potential to provide more comprehensive biodiversity assessments, particularly for vertebrates in species-rich regions. However, this method requires the completeness of a reference database (i.e. a list of DNA sequences attached to each species), which is not currently achieved for many taxa and ecosystems. As an alternative, a range of operational taxonomic units (OTUs) can be extracted from eDNA metabarcoding. However, the extent to which the diversity of OTUs provided by a limited eDNA sampling effort can predict regional species diversity is unknown. Here, by modelling OTU accumulation curves of eDNA seawater samples across the Coral Triangle, we obtained an asymptote reaching 1531 fish OTUs, while 1611 fish species... |
| Tipo: Text |
Palavras-chave: EDNA metabarcoding; Sequence clustering; Operational Taxonomic Unit; Diversity assessment; Detectability. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00640/75232/79601.pdf |
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| Artero, Celine; Marchetti, Simon; Bauer, Eric; Viala, Christophe; Noël, Claire; Koenig, Christopher; Berzins, Rachel; Lampert, Luis. |
| Monitoring fish species populations in very turbid environments is challenging. Acoustic cameras allow work in very poor visibility but are often deployed as a fixed observation point, limiting the scope of the survey. A BlueView P900-130 acoustic camera was deployed in rocky marine habitats off the coast of French Guiana in order to assess the total abundance, size structure and spatial distribution of a demersal fish population. The relevancy of using an acoustic camera to achieve these three objectives was evaluated by comparing acoustic data to those obtained from fishing surveys. The detection and identification of large demersal fish species were possible with the shape and size of the acoustic signal and acoustic shadow silhouette as well as... |
| Tipo: Text |
Palavras-chave: Fish stock survey; Turbid waters; Acoustic camera; Demersal fish; Distribution; Detectability. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00687/79907/82809.pdf |
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| Uribe,Sandra V; Estades,Cristián F. |
| BACKGROUND: In Chile, most of the timber industry depends on Monterey pine (Pinus radíala (D. Don.)) plantations, which now cover more than 1.5 million ha. In spite of the intensive management of these plantations, they are home to a large number of wildlife species. One of the least known groups in this type of environment are reptiles. For this reason, we conducted a study on the distribution and abundance of reptiles at plantations of different ages in seven sites in the Coastal Range of Central Chile. RESULTS: From seven species that could be potentially found in the study region, a total of five species were recorded, with Liolaemus lemniscatus (Gravenhorst) being the most abundant (with up to 160 ind*ha-1). Detectability of species was similar in... |
| Tipo: Journal article |
Palavras-chave: Abundance; Detectability; Habitat use; Understory; Plantation; Lizard. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100022 |
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| FRAGA,Rafael de; TORRALVO,Kelly. |
| ABSTRACT The fringed leaf frog, Cruziohyla craspedopus is rarely sampled in the Brazilian Amazon, probably due to low detection probability associated with its arboreal habit. The knowledge about the species’ distribution stems from successive additions of occasional occurrence records, which indicate that the species is widely distributed throughout Amazonia. We present new occurrence records to update the geographic range of the species, which is hereby extended 224 km to the northeast. We also present morphological data from collected specimens and discuss the updated range from the geographic and ecological points of view. We show that the range of the leaf frog crosses several main tributaries along the southern bank of the Amazonas River, although... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Amazon Basin; Detectability; Tapajós; Tree cover. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000300208 |
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