Seabird temporal composition, abundance and habitat use in “Punta La Metalera” (Arequipa), Southern Peru

データ レコード

この sampling event リソース内のデータは、1 つまたは複数のデータ テーブルとして生物多様性データを共有するための標準化された形式であるダーウィン コア アーカイブ (DwC-A) として公開されています。 コア データ テーブルには、216 レコードが含まれています。

拡張データ テーブルは1 件存在しています。拡張レコードは、コアのレコードについての追加情報を提供するものです。 各拡張データ テーブル内のレコード数を以下に示します。

この IPT はデータをアーカイブし、データ リポジトリとして機能します。データとリソースのメタデータは、 ダウンロード セクションからダウンロードできます。 バージョン テーブルから公開可能な他のバージョンを閲覧でき、リソースに加えられた変更を知ることができます。

バージョン

次の表は、公にアクセス可能な公開バージョンのリソースのみ表示しています。

引用方法

研究者はこの研究内容を以下のように引用する必要があります。:

Vilca Taco, L.M., Mamani T., E., Luque Fernández, C. R., 2021. Seabird temporal composition, abundance and habitat use in “Punta La Metalera” (Arequipa), Southern Peru. Museu de Ciències Naturals de Barcelona. Dataset/Occurrence. https://doi.org/10.15470/9umyvz

権利

研究者は権利に関する下記ステートメントを尊重する必要があります。:

パブリッシャーとライセンス保持者権利者は Museu de Ciències Naturals de Barcelona。 This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.

GBIF登録

このリソースをはGBIF と登録されており GBIF UUID: 2fb0b491-a53a-40ee-98ef-d3e9a377c9b8が割り当てられています。   GBIF Spain によって承認されたデータ パブリッシャーとして GBIF に登録されているMuseu de Ciències Naturals de Barcelona が、このリソースをパブリッシュしました。

キーワード

Diversity; Land-use; Seabird; Behavior; Disturbances; Larosterna inca; Occurrence

連絡先

地理的範囲

The study was conducted in Punta La Metalera in the Islay district of the city of Arequipa, 10 km northeast of Mollendo (-72.111527 °S, -17.015428 °W). Punta La Metalera is a cape that has varied landforms: cliffs, shoreline, rocky outcrops with steep slopes and guano-covered surface, and algae vegetation. Its surrounding areas are islets.

生物分類学的範囲

説明がありません

時間的範囲

プロジェクトデータ

The South American Pacific coast is one of the most biologically productive habitats on Earth and its influence on the communities and relationships therein is strong (Flores et al., 2013). In the case of Peru, the coast is bathed by the Peruvian or Humboldt current (Brack and Mendiola, 2000), which together with the extensive areas of coastal upwelling and the dynamics in the processes of nutrients and biogeochemical cycles (Morón, 2000; Graco et al., 2007) has produced the conditions for great biodiversity. This diversity is especially based on the extremely high primary productivity that is reflected in an abundance of zooplankton fish, birds and marine mammals (Chavez et al., 2008; Montecino and Lange, 2009; Cisterna, 2020). The most important seabird habitats along this coast consist of a system of islands, islets, and guano points which in many cases host unique bird species (Lara et al., 2008). The study of bird population dynamics in this system is limited, however (Tovar et al., 1969, Tovar et al., 1987; Goya, 2000; Weimerskirch et al., 2012; Figueroa, 2013; SERNANP, 2016). Besides, these bird populations are under pressure from natural events such as the phenomenon "El Niño" (Flores et al., 2013), which had severe repercussions. They are also affected by anthropic activities such as the extraction of guano (with the greatest boom occurring in the 19th century) and over fishing which affect the availability of food for many of these birds (Tovar et al., 1987; Apaza and Figari, 1999; Brack and Mendiola, 2000). Additionally, species respond differently to environmental and physiographic factors (Véliz et al., 2002), as monthly variations have shown on one or some specific species (González and Málaga, 1997). As fluctuations can strongly influence a system's functionality they should be monitored. A vast portion of coastal economic activities are related to the fishing ports and may therefore be linked to the population dynamics within bird communities. The south of Peru houses the country’s second largest international port (Matarani), the international terminal port (TISUR in Islay), and many small-scale port infrastructures, such as Punta La Metalera (El Faro). The main activities in Punta La Metalera are tourism, recreation, and the extraction of fish, shellfish, algae and guano. However, information that would help decision-making regarding development plans (Järvinen and Väisänen, 1979; Koskimies, 1989; Bibby et al., 1992) of the urban-rural population and nearby activities for sustainable development is lacking. Such information could provide multiple benefits for biodiversity conservation at a regional scale (Luna-Jorquera et al., 2012). The aim of the present study was to evaluate changes in the bird community at Punta La Metalera on a temporal scale in terms of species composition and richness-abundance, and to characterize habitat use and behavior of the species present in late 2019 and early 2020.

プロジェクトに携わる要員:

収集方法

We conducted 24 counts from October 2019 to March 2020 using the point count method (Bibby et al. 1992), covering around 700 m of coastline. Counting points were set for the four zones, selected based on accessibility (most of the cape coastline was difficult to access). Six trips were made (one per month). On each trip we conducted three censuses: one between 5:30 a.m. and 9:30 a.m., a second between 12 p.m. and 2.30 p.m., and a third between 3:30 p.m. and 6:00 p.m.). We spent 20 minutes at each point (Bibby et al., 1992), making a total effort of 1,680 minutes (28 hours). We only counted birds that were perched on land or at sea, not those in flight. We did not exclude only coastal birds as our aim was also to look at behavior and habitat use. However, all birds sighted (all species passing through any area) were recorded for richness. At each point, the species present were identified and quantified using Bushnell, Tasco, Nikon, and Galileo binoculars (10x50, 12x45, and 90x80), Fujifilm camera (eight megapixels), field cards, and notes. Before starting the census we waited for five minutes for the birds to adapt to our presence as our arrival caused a slight displacement of some of them, especially those on the edges. The birds we considered as coastal seabirds were species of the orders Anseriformes, Ciconiiformes, Charadriiformes, Pelecaniformes Suliformes, Podicipediformes, Falconiformes, Passeriformes (Acosta et al., 2013), Sphenisciformes, and Cathartiformes. To identify the species, we used the guides of Jaramillo (2003), Tabini and Paz-Soldán (2007) and Schulenberg et al. (2010). The taxonomic nomenclature was taken from the SACC (Remsen et al., 2020), and the category of species risk was assigned using the IUCN Red List of Threatened Species.

Method step description:

1. We analyzed the temporal fluctuation by comparing months and comparing the mean values for each month of the abundance variation using ANOVA (one way, p < 0.05.). Data normality was previously evaluated using the Shapiro test (Peña-Villalobos et al., 2012) and normalized using the bestNormalize (Peterson, 2020) package in RStudio (RStudio Team, 2020). The species occurrence frequency (SOF) was analyzed considering six categories (Nores, 1996 cited by Brandolin et al, 2007), which are: i) very common (0.8–1), ii) common (0.6–0.8), iii) frequent (0.4–0.6), iv)scarce (0.2–0.4), v) occasional (0.1–0.2), and vi) accidental (< 0.1). These values were obtained for each species as the number of months in which the species was present, divided by the total number of sampled months. For the species relative abundance (SRA), we considered five categories: i) abundant (90–100 %), ii) common (65–89 %), iii) moderately common (31–64 %), iv)uncommon (10–30 %), and v) rare (1–9 %). These percentages were obtained for each species as the number of individuals of a species divided by the total number of individuals considering all species and multiplied by 100 (Güitrón–López et al., 2018). The dissimilarity of species abundance between months was calculated using the index of similarity (Bray-Curtis), 1 - (2c/S1 + S2), where S1 and S2 are the number of species in sample months 1 and 2, respectively, and c is the number of species present in both sample months. This dissimilarity was represented with dendrograms using the UPGMA method with PAST v.2.17 (Kusch et al. 2008 cited by Peña-Villalobos et al., 2012) to establish a similarity relationship between assessment months on species/abundance fluctuations. And finally, habitat use (land-use) was analyzed comparing the birds' behavior s per month, for which we summed up each behavior record.

書誌情報の引用

1. Vilca Taco, L.M., Mamani T., E., Luque Fernández, C. R., 2021. Seabird temporal composition, abundance and habitat use in “Punta La Metalera” (Arequipa), Southern Peru. Arxius de Miscel·lània Zoològica, 19: 161-181, https://doi.org/10.32800/amz.2021.19.0161 https://doi.org/10.32800/amz.2021.19.0161

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