Описание
This dataset gathers amphibian observations collected within the CROA project since 2023. It documents species presence, activity, and reproductive behavior across a range of aquatic habitats, including ponds, ditches, and natural or managed wetlands. The data include species detections, survey conditions, site locations, and sampling effort information, providing a basis for monitoring population status and supporting conservation actions in urban and peri-urban environments.
License: CC BY 4.0
Записи данных
Данные этого occurrence ресурса были опубликованы в виде Darwin Core Archive (DwC-A), который является стандартным форматом для обмена данными о биоразнообразии в виде набора из одной или нескольких таблиц. Основная таблица данных содержит 112 записей.
Данный экземпляр IPT архивирует данные и таким образом служит хранилищем данных. Данные и метаданные ресурсов доступны для скачивания в разделе Загрузки. В таблице версий перечислены другие версии ресурса, которые были доступны публично, что позволяет отслеживать изменения, внесенные в ресурс с течением времени.
Версии
В таблице ниже указаны только опубликованные версии ресурса, которые доступны для свободного скачивания.
Как оформить ссылку
Исследователи должны дать ссылку на эту работу следующим образом:
Dokhelar T, Besnard A (2026). CROA Project: Urban Amphibian Occurrences and Monitoring in Southern France. Version 1.4. Centre d’Ecologie Fonctionnelle & Evolutive (CEFE). Occurrence dataset. https://ipt.gbif.fr/resource?r=croa_cefe&v=1.4
Права
Исследователи должны соблюдать следующие права:
Публикующей организацией и владельцем прав на данную работу является Centre d’Ecologie Fonctionnelle & Evolutive (CEFE). Эта работа находится под лицензией Creative Commons Attribution (CC-BY 4.0).
Регистрация в GBIF
Этот ресурс был зарегистрирован в GBIF, ему был присвоен следующий UUID: 9fd8ed05-3ae6-453a-878a-c0a272a2b849. Centre d’Ecologie Fonctionnelle & Evolutive (CEFE) отвечает за публикацию этого ресурса, и зарегистрирован в GBIF как издатель данных при оподдержке GBIF France.
Ключевые слова
amphibians freshwater habitats wetlands urban environments urban ecology long-term monitoring biodiversity monitoring citizen science population monitoring population dynamics reproductive activity sampling effort field surveys species occurrence conservation biology occurence; Observation
Контакты
https://orcid.org/https://orcid.org/0000-0002-8780-767X
- Originator ●
- Point Of Contact
Географический охват
N/A
| Ограничивающие координаты | Юг Запад [43,624, 3,822], Север Восток [43,664, 3,888] |
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Данные проекта
Описание отсутсвует
| Название | CROA Project: Amphibians in Urban Environments (CEFE) |
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Исполнители проекта:
Методы сбора
Sampling follows a standardized field protocol based on repeated surveys of spatial grid cells during the amphibian reproductive season. Each grid cell is surveyed up to three times per year, ideally once in early spring (March–April), once in mid-spring (May), and once in late spring (June), in order to capture the phenology of different species and life stages. Surveys are primarily conducted at night, when amphibian activity and detectability are highest, using visual searches with headlamps and acoustic detection of calling males. Daytime surveys are occasionally carried out in sites with restricted nocturnal access. During each visit, all amphibians observed are recorded, including species identity (or the most precise taxonomic level possible), life stage (adult, juvenile, egg mass, tadpole), estimated abundance, and behavioral context (e.g. calling, in water, on land). In parallel, all aquatic habitats encountered within each grid cell are inventoried and characterized, allowing the monitoring of breeding sites and habitat availability over time.
| Охват исследования | The CROA project focuses on monitoring amphibian populations in urban and peri-urban environments in the northern part of Montpellier and surrounding municipalities (southern France). The study area is subdivided into predefined spatial grid cells (mailles), each identified by a unique identifier, covering a mosaic of habitats including urban parks, residential areas, wastelands, riverbanks, retention basins, wetlands, and other aquatic or semi-aquatic environments. Data have been collected continuously since 2023, with surveys conducted during the amphibian breeding season from March to June. The spatial and temporal extent of the dataset reflects variations in sampling effort between years, while providing long-term baseline information on species occurrence, breeding activity, and habitat use in an urban context. |
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Описание этапа методики:
- Field data are collected directly in the field using the QField mobile application. For each survey event, general information is recorded at the grid-cell level, including date, survey type (diurnal or nocturnal), weather conditions, survey duration, dominant habitat type, and list of observers. Each amphibian observation is then entered as an individual record linked to the corresponding grid cell and date. When species-level identification is uncertain, generic taxonomic categories (e.g. sp. or “undetermined”) are used, optionally accompanied by explanatory remarks. Aquatic habitats are digitized as polygons and described using standardized attributes (habitat type, estimated depth, permanence, presence of fish or crayfish). After field collection, data are exported, quality-checked, taxonomically harmonized using national reference lists, and structured into relational tables. Occurrence data are then transformed into Darwin Core format for publication through GBIF, ensuring interoperability and long-term accessibility.
Дополнительные метаданные
| Благодарности | We would like to sincerely thank Maël Moulin and Lison Charlier for the quality of their internship work. A big thank you also goes to all the volunteers for their commitment and valuable contribution: Cyrielle Ballester, Soumaya Belghali, Christelle Beusquart, Léo Blondet, Tom Carli, Tom Chaubet, Guillaume Didier, Jordan Emerit, Marie Esquerre, Max François, Elodie Gazanion, Léo Gentile, Guy Lepinoy, Noé Lion, Bastien Macé, Titouan Montessuit, Valérie Peltrault, Agathe Pierre, Manon Skrypczuk, Elise Thiery, Félix Thirion, Sara Vasseur, Amandine Vellas, and Lucas Wesemann. Finally, we warmly thank our partners, UnisCité and the Montpellier Zoo, for their support and collaboration on this project. |
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| Альтернативные идентификаторы | 9fd8ed05-3ae6-453a-878a-c0a272a2b849 |
| https://ipt.gbif.fr/resource?r=croa_cefe |