OCCURRENCE

Humpback whale sightings around New Zealand 1970-1999

Última versión Publicado por Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node en 19 de diciembre de 2019 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node
Humpback whales were almost taken to extinction by intensive whaling activities during the past century. In Area V, an original population of approximately 10 000 humpbacks at the beginning of the century had been reduced to less than 5%, or estimated 250-500 whales of the original population(Chittleborough 1965). Humpbacks were given total protection from commercial whaling by the International Whaling Commission (IWC) in 1966 and presently have an International Union for Conservation of Nature (IUCN) status of Vulnerable (Donoghue 1994). Although protected, subsistence hunting of humpbacks continued in Tonga until 1979 when whaling was prohibited by Royal Decree; and in Antarctica by illegal Russian whaling of approximately 47 000 humpbacks, which continued until the 1980s (Donoghue 1994... Más

Descripción

Humpback whales were almost taken to extinction by intensive whaling activities during the past century. In Area V, an original population of approximately 10 000 humpbacks at the beginning of the century had been reduced to less than 5%, or estimated 250-500 whales of the original population(Chittleborough 1965). Humpbacks were given total protection from commercial whaling by the International Whaling Commission (IWC) in 1966 and presently have an International Union for Conservation of Nature (IUCN) status of Vulnerable (Donoghue 1994). Although protected, subsistence hunting of humpbacks continued in Tonga until 1979 when whaling was prohibited by Royal Decree; and in Antarctica by illegal Russian whaling of approximately 47 000 humpbacks, which continued until the 1980s (Donoghue 1994,Yablokov 1994).

While some humpback whale populations have been widely studied, others including the population that migrates along the New Zealand coast are little known since the cessation of commercial whaling. Following the closure of Tory Channel whaling station in 1964, humpbacks have rarely been sighted in New Zealand waters (Helweg et al. 1999), suggesting that this migratory population has not shown any significant recovery, although Cawthorn (1997) reported an apparent increase in New Zealand waters. Due to the differences in population structure between areas, knowledge derived from one ocean or population cannot easily be applied to others.

This dataset represents a compilation of all sightings of humpback whales around New Zealand within the Exclusive Economic Zone (EEZ).

Registros

Los datos en este recurso de registros biológicos han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 152 registros.

Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.

Descargas

Descargue la última versión de los datos como un Archivo Darwin Core (DwC-A) o los metadatos como EML o RTF:

Datos como un archivo DwC-A descargar 152 registros en Inglés (10 kB) - Frecuencia de actualización: no planeado
Metadatos como un archivo EML descargar en Inglés (8 kB)
Metadatos como un archivo RTF descargar en Inglés (9 kB)

Versiones

La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.

¿Cómo referenciar?

Los usuarios deben citar este trabajo de la siguiente manera:

Gibbs, N; Childerhouse, S., 2000. Data from: Humpback whales around New Zealand. Conservation Advisory Science Notes No. 257,Department of Conservation, Wellington

Derechos

Los usuarios deben respetar los siguientes derechos de uso:

El publicador y propietario de los derechos de este trabajo es Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

Registro GBIF

Este recurso ha sido registrado en GBIF con el siguiente UUID: 7d122ae7-ef18-42a7-a0d4-bf4540826dbc.  Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node publica este recurso, y está registrado en GBIF como un publicador de datos avalado por Ocean Biodiversity Information System.

Palabras clave

Occurrence; Observation

Contactos

¿Quién creó el recurso?:

Nadine Gibbs
Researcher
Department of Conservation
P.O. Box 10-420
Wellington
NZ

¿Quién puede resolver dudas acerca del recurso?:

Nadine Gibbs
Department of Conservation
NZ
Simon Childerhouse
Researcher
Department of Conservation
P.O. Box 10-420
Wellington
NZ

¿Quién documentó los metadatos?:

Nadine Gibbs
Researcher
Department of Conservation
P.O. Box 10-420
Wellington
NZ

Cobertura geográfica

New Zealand EEZ

Coordenadas límite Latitud Mínima Longitud Mínima [-49, 165], Latitud Máxima Longitud Máxima [-34, 180]

Cobertura taxonómica

Humpback whale

Especie  Megaptera novaeangliae (Humpback whale)

Cobertura temporal

Fecha Inicial / Fecha Final 1970-01-01 / 1999-12-31

Métodos de muestreo

Collation of sighting information was achieved through detailed literature searches of published and unpublished work and contacting people through phone interviews and email. These sources included: (1) existing sighting sheets from relevant Department of Conservation (DOC) conservancies/field centres and Ministry of Fisheries scientific observers; (2) vessel log books from fishermen; (3) whale-watching tour operators and commercial spotter plane pilots; (4) whale researchers; (5) public; (6) media reports; (7) whale stranding records from Te Papa/Museum of New Zealand; (8) published papers and reports.

Área de Estudio New Zealand EEZ

Descripción de la metodología paso a paso:

  1. All the sighting information that was collected was entered into an MS Excel spreadsheet and analysed to determine: (1) locations of sightings; (2) date and seasonality of sightings; (3) composition of sightings (i.e. singles, groups, cow-calf pairs), (4) common behavior states (i.e. feeding, traveling, nursing, surface active).

Metadatos adicionales

marine, harvested by iOBIS