Original provider: Tethys Research Institute Dataset credits: Tethys Research Institute; Institute for Environmental Protection and Research - ISPRA Abstract: Monitoring abundance and distribution is essential in any conservation strategy, but is often ignored in many regions, including much of the Mediterranean. It is a priority of the Italian Ministry of the Environment, who funded a series of aerial surveys around Italy, to provide significant baseline information on cetaceans distribution and abundance. The covered areas included the Pelagos Sanctuary, the Central Tyrrhenian, the Corsica and Sardinia Seas, and the Ionian Sea and the Gulf of Taranto. Numbers of animals within the Sanctuary are significantly higher in summer, when human activities and thus potential population level impacts are highest. A crude comparison with data from past shipboard surveys suggests an appreciable decrease in fin whale density in the Pelagos Sanctuary area over the last decade, reiterating the need for a major synoptic basinwide survey, as well as regular monitoring surveys. The low CVs and CIs reconfirm the effectiveness of aerial surveys in estimating abundance of certain cetacean species in suitable areas/circumstances and may provide a model for other areas of the Mediterranean. These surveys provide baseline data to develop efficient long-term systematic monitoring programmes, as required by a number of national and international frameworks. The collected data may also be crucial in assessing whether ship strikes, one of the main causes of death for fin whales in the Mediterranean, are affecting the Mediterranean population. Supplemental information: Effort data are from 2009 only. When time and observed counts were not available, "00:00:00" and "1" was filled in, respectively.
此資源出現紀錄的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 1,142 筆紀錄。
Lanfredi, C. and G. Notarbartolo di Sciara. 2011. Tethys Research Institute aerial survey cetacean sightings 2009-2011. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/776) on yyyy-mm-dd.
此資料的發布者及權利單位為 OBIS-SEAMAP。 This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.
Occurrence,Aircraft,Sightings; Observation; Occurrence
- 擁有者 ●
- 出處 ●
|界定座標範圍||緯度南界 經度西界 [36.044, 5.882], 緯度北界 經度東界 [44.294, 19.025]|
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
|Order||Cetacea (cetaceans), Cetacea (cetaceans)|
|Species||Balaenoptera physalus (Fin Whale), Globicephala melas (Long-finned Pilot Whale), Grampus griseus (Risso's Dolphin), Physeter macrocephalus (Sperm Whale), Stenella coeruleoalba (Striped Dolphin), Tursiops truncatus (Common Bottlenose Dolphin), Ziphius cavirostris (Cuvier's Beaked Whale)|
|起始日期 / 結束日期||2009-01-12 / 2011-01-19|
|計畫名稱||Tethys Research Institute aerial survey cetacean sightings 2009-2011|
marine, harvested by iOBIS