Humpback whale sightings around New Zealand 1970-1999
Nadine Gibbs, Department of Conservation;Simon Childerhouse, Department of Conservation
Dataset credit
OBIS and SWP OBIS
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Contacts
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Citation
Gibbs, N; Childerhouse, S., 2000. Data from: Humpback whales around New Zealand. Conservation Advisory Science Notes No. 257,Department of Conservation, Wellington Gibbs, N and S. Childerhouse. 2020. Humpback whale sightings around New Zealand 1970-1999. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/103152387) on yyyy-mm-dd and originated from OBIS (https://obis.org/dataset/2dc8ac96-9909-49e7-b003-29a0c6fdcf93)
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Abstract
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).
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Purpose
N/A
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Supplemental information
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References
Gibbs, N; Childerhouse, S., 2000. Data from: Humpback whales around New Zealand. Conservation Advisory Science Notes No. 257,Department of Conservation, Wellington
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Attributes
Overview
This section explains attributes included in the original dataset.
OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only.
Should you need other attributes described here, you are encouraged to contact the data provider.
Attributes described below represent those in the original dataset provided by the provider.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".
Attributes in dataset
Attribute (table column) | Description |
oid | Internal ID |
id | Record ID |
dataset_id | Dataset ID |
scientificname | Scientific name |
vernacularname | Vernacular name |
aphiaid | Aphia ID |
taxonrank | taxononic rank |
individualcount | Group size / individual count |
eventdate | Event date (precision varies) |
eventtime | Event time |
decimallatitude | Latitude in decimal degrees |
decimallongitude | Longitude in decimal degrees |
coordinateprecision | Coordinate precision |
catalognumber | Catalog number |
collectioncode | Collection code |
occurrencestatus | Occurrence status |
basisofrecord | Basis of record (HumanObservation / MachineObservation) |
modified | Date/time the record was modified |
node_id | Node ID |
occurrenceid | Occurrence ID |
occurrenceremarks | Occurrence remarks |
eventid | Event ID |
institutioncode | Institution code |
lifestage | Life stage |
sex | Gender of the animal if known |
species | Species by provider |
datasetid | Dataset ID by provider |
country | Country |
locality | Location of ocean |
waterbody | Details of ocean |
dropped | Flag indicating the record was dropped (always false) |
absence | Flag indicating the record represents the absence of the species (always false) |
marine | Flag indicating the record is for marine life (always true) |
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OBIS-SEAMAP ID | 103152387 |
Seabirds | 0 |
Marine mammals | 152 |
Sea turtles | 0 |
Rays and sharks | 0 |
Other species | 0 |
Non spatial | 0 |
Non species | 0 |
Total | 152 |
Date, Begin | 1970-01-13 |
Date, End | 1999-09-18 |
Temporal prec. | 110000 |
Latitude | -48.00 - -35.05 |
Longitude | 164.50 - 178.32 |
Coord. prec. | 6 decimal digits |
Platform | Various |
Data type | Animal sighting |
Effort | N/A |
if ($show_effort_stat) {
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Traveled (km) | 0 |
| 0 |
}
if ($sources != null and $sources != "" and $dataset_id != 427) { // Do not show ESAS
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Contr. through | iOBIS |
}
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Registered | 2020-06-30 |
Updated | 2021-02-05 |
Status | Published |
Sharing policy |
CC-BY (All) |
Shared with |
None |
See metadata in static HTML |
See metadata in FGDC XML |
See download history / statistics |
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