Description
Enregistrements de données
Les données de cette ressource données d'échantillonnage ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 5 028 enregistrements.
2 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension est illustré ci-dessous.
Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.
Versions
Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
Stichting ANEMOON. ANEMOON Beach washup monitoring (SMP) data along the Dutch coastline collected through citizen science. Version 1.0. stichting ANEMOON. Samplingevent dataset. https://ipt.nlbif.nl/resource?r=anemoon_smp_1977_2024&v=1.0
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est stichting ANEMOON. Ce travail est sous licence Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0.
Enregistrement GBIF
Cette ressource n'a pas été enregistrée sur le portail GBIF
Mots-clé
Occurrence; Citizen science
Contacts
- Personne De Contact
- Chair
- Fournisseur Des Métadonnées ●
- Personne De Contact
Couverture géographique
Locations scattered across the Dutch coastline.
| Enveloppe géographique | Sud Ouest [49,382, 2,461], Nord Est [54,368, 7,207] |
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Données sur le projet
Pas de description disponible
| Titre | SMP (Strandaanspoelsel Monitoring Project) |
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Les personnes impliquées dans le projet:
Méthodes d'échantillonnage
On transect locations, all washed-up marine organisms and remains are determined and counted on a biweekly or monthly basis. The SMP-trajects vary in length from about one to fout kilometer. Observers make sure they are at the starting point of the SMP traject 30-60 minutes before low tide. Then the first half of the monitoring walk takes place along the low-tide line. At the turning point of the traject the observers turn around and walk back following the high tide line. During the monitoring walk observations are being noted, special findings are photographed and sometimes material is brought home for species determination. Macroalgae, Cnidarians, Gastropods, Cephalopods, Bivalves, Crustaceans, Echinoderms, Shark and Ray egg capsules and Bryozoans are noted at species level. For each species the abundance class (0, 0-10, 11-100, 101-1000, 1001-10000, 10001 – 100000, >100000) and “decay category” are noted (Alive, Doublet, Single valve, Empty snail shell, Flesh remains, Dead (whole specimen), Peel/skeleton, Fragment, without flesh, Exuvia, Subfossil, Fossil, Egg capsule, Egg).
| Etendue de l'étude | For now there are nine transects along the Dutch coastline. This number is increased when new transects are born. |
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| Contrôle qualité | New observers always accompany experienced observers for some time before going through the monitoring process on their own. The fact that observers walk in pairs at a minimum makes consultation and discussion possible. When in doubt about an identification, the collected material is examined by other experienced citizen scientists or, or if necessary by ANEMOON affiliated experts. The species that are standardly found in the SMP are regularly seen and are often not difficult to identify. When in doubt about the species identity, observers are instructed to note down XX on the SMP fieldwork form or in the SMP-webapp. The XX observations are included in the analysis as ”Missing Values”. |
Description des étapes de la méthode:
- Walk fixed SMP trajectory, start 30-60 minutes before low tide, walk along low tide line.
- Turn at fixed turning point
- Walk back along high tide line
- Write down all the species found in the WebApp or on the form, write abundance category and decay category/ lifestage, write XX for Missing Values, write species found that aren’t on the list at “bijschrijfsoorten”.
Métadonnées additionnelles
| Remerciements | This project would not be here without the volunteers (strandwachten) that full of dedication, through rain and storm, have walked and will walk the beaches to collect data about the coastal zone. |
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| Premiers pas | What can the decay categories tell us? The species are noted with the quality in which the material was found. The quality in which the material is, is due to decay after the death of the animal. Of the crabs, for example, we can find live individuals, nearly intact individuals, dead animals or exuvia. Live animals of bivalves can wash ashore as well as doublets with flesh remains, doublets without flesh remains or loose valves. The loose valves may be fresh (uncolored) or old to very old (fossil). The time in which material passes from passes from one stage to another (decay time), may vary among species or groups. Both among crabs and among bivalves three main stages can be distinguished, within which subdivisions are sometimes possible. The decay stages of certain species can give an indication of the period in which the species lived or/and about the transport directions of the material. In such cases, it is assumed that when something intact on the beach washes up that is known to decay rapidly, it cannot be old or have been transported from far. Decay categories Alive - Alive Exuvia - Exuvia (molt skin) Intact - Found dead, but fresh and intact Fragments - Parts of Claws, legs, shell Fresh/flesh - Fresh bivalve (doublet) with flesh remains Doublet - Bivalve shell (doublet) without flesh remains Old/Singlet - Loose valve Fossil - Loose valve colored black or dark blue If any questions arise about this, please contact anemoon@cistron.nl (for inquiries in Dutch) or nleestemaker@anemoon.org (for inquiries in English). Where do the washup up individuals come from? Most fresh material comes from the very near coastal zone. Occasionally after extremely strong winds, material from deeper zones can be brought in from about 10 meters depth, up to max about 3.5 km from the coast. The observations of fresh material (crabs, echinoderms, doublets (with meat remains), snail shells with meat remains, mainly say something about the very near coastal zone. However, there are indications that trends in the nearshore zone are broadly similar to population changes further offshore. For more information read: de Bruyne, R. H., van der Valk, L., & Meyling, A. G. (1993). Molluskentransport als indicatie voor zandtransport: een onderzoek naar transportbanen in de ondiepe kustgebieden voor Holland en de Waddeneilanden [kustgenese] (No. C009/93). RIVO. Gmelig Meyling, A. W., & De Bruyne, A. W. (1994). Zicht op zee: waarnemingen van veranderingen in de nabije kustzone door strandmonitoring met 381 strandwachten. Technical Report, 79, 79. Evaluatie van 10 jaar Strandwacht Katwijk-Noordwijk 1978-1987 (1993) Trends bepalen uit aanspoel signalen (2003) . Lange termijn trends van meerdere tweekleppigen vanaf 1945 -2002 Onder het zand beland (2009) . Invloed van strand- en vooroever-suppleties op het leven in de nabije kustzone en trends t/m 2008. Literature can be found on https://www.anemoon.org/publicaties/downloads/entryid/3. |
| Identifiants alternatifs | https://ipt.nlbif.nl/resource?r=anemoon_smp_1977_2024 |