scholarly journals Census of the Southern Giant Petrel population of the Falkland Islands 2004/2005

2008 ◽  
Vol 18 (2) ◽  
pp. 118-128 ◽  
Author(s):  
Tim A. Reid ◽  
Nic Huin
Keyword(s):  
Total Population ◽  
Current Knowledge ◽  
Conservation Status ◽  
Breeding Population ◽  
Knowledge Development ◽  
Falkland Islands ◽  
Giant Petrel ◽  
Strong Indication ◽  
Southern Giant Petrel ◽  
Near Threatened

AbstractA complete census was taken of all colonies of Southern Giant Petrels Macronectes giganteus within the Falkland Islands in 2004/05. The breeding population of the islands was estimated to be approximately 19,529 pairs (range 18,420–20,377). Southern Giant Petrels were found to breed in 38 locations around the islands, with colony size varying from one to 10,936. The majority of colonies were concentrated around the south of Falkland Sound, and to the west of West Falkland. Whilst there has been no previous census of the total population of the islands, there is a strong indication that the population has increased since the 1950s. The reasons for such an increase in population remain unclear in light of current knowledge. Development of our understanding of the breeding biology and demography of this species in the Falkland Islands is necessary, as is the need to conduct such a census every five years, with a few key colonies to be monitored every season. From the results obtained here, the conservation status of the Southern Giant Petrel, currently listed as ‘Vulnerable’, could be downgraded to ‘Near Threatened’.

scholarly journals An assessment of the abundance and distribution of the Titicaca Flightless Grebe Rollandia microptera on Lake Titicaca and evaluation of its conservation status

2006 ◽  
Vol 16 (3) ◽  
pp. 237-251 ◽  
Author(s):  
ARI E. MARTINEZ ◽  
DAVID F. ARANIBAR ◽  
EDWIN R. GUTIERREZ
Keyword(s):  
Total Population ◽  
Population Distribution ◽  
Current Knowledge ◽  
Conservation Status ◽  
Local Population ◽  
Development Stage ◽  
Iucn Red List ◽  
Lake Titicaca ◽  
Large Spatial Scale ◽  
Distribution Ranges

Censuses were conducted from 15 June to 6 July and from 15 to 24 October 2003 throughout Lake Titicaca to determine the current distribution and abundance of the Titicaca Flightless Grebe Rollandia microptera. We surveyed 22 of an estimated 25 local population distribution ranges. We defined these as shallow offshore feeding areas in combination with coastal beds of tule-rushes (Schoenoplectus tatora). At this large spatial scale we found variously sized populations of grebes in all 22 of the areas surveyed and a negative correlation between the total area of tule-bed within each area and grebe density. Absolute counts of grebes pooled across all sites produced a total of 2,582 individuals on Lake Titicaca. Given that some sites were either partially surveyed or not surveyed at all we feel that this is an underestimate of the total lake population. Limitations in methodologies used precluded the classification to development stage of approximately 43% of the individuals counted. Among the remaining 57% of the individuals counted we identified 732 mature adults within the total population of Lake Titicaca. When combined with information from other sources and current knowledge of habitat fragmentation our results support the classification of the species in the IUCN Red List as Endangered under criterion C2a. Of 20 local fisherman interviewed on the Bolivian side of Lake Titicaca, 90% confirmed that individuals of Titicaca Flightless Grebe incidentally drown in their fishing nets although responses varied from weekly to monthly estimates of by-catch. Although this study provides the first estimate of the total population of Titicaca Flightless Grebes on Lake Titicaca, a standardized monitoring programme will be required in order (1) to provide a baseline for the interpretation of future population trends in the context of impacts generated by human activities and (2) to aid in future management decisions for the long-term conservation of the species.

Ecogeographical variation in the Southern Giant Petrel (Macronectes giganteus)

2010 ◽  
Vol 88 (2) ◽  
pp. 195-203 ◽  
Author(s):  
Marc Salomon ◽  
Jean-François Voisin
Keyword(s):  
River Estuary ◽  
Falkland Islands ◽  
Northern Province ◽  
Giant Petrel ◽  
Genetic Studies ◽  
Interpopulational Variation ◽  
Gough Island ◽  
Southern Giant Petrel ◽  
Allen’S Rule ◽  
The Antarctic

The Southern Giant Petrel ( Macronectes giganteus (Gmelin, 1789); Aves, Procellariiformes), ranging from New Zealand to the Graham Peninsula and Patagonia and also from coastal Antarctica to Gough Island, displays significant geographic variation throughout its range. Six breeding provinces were identified, which show significant interpopulational variation. The formerly proposed subspecies Macronectes giganteus giganteus and Macronectes giganteus solanderi were confirmed. Macronectes giganteus solanderi has smaller homologuous parts than M. g. giganteus. Two of the provinces belong to the subspecies M. g. solanderi. Females are smaller and have shorter bills than males. In M. g. giganteus, outer appendages are longer in the sub-Antarctic than in the Antarctic, which is consistent with Allen’s rule. Moreover, an east-to-west cline shows a gradual decrease in body size. Within M. g. solanderi, the Chubut River Estuary (Argentina) and the Falkland Islands form the southern province, and Gough Island the northern province. The birds have shallower bills in Argentina than in the Falklands or Gough, but tarsi are longest in Gough. Macronectes giganteus giganteus is morphologically polymorphic but taxonomically stable, whereas M. g. solanderi, which is biometrically less variable, could undergo taxonomical differentiation. This paper gives arguments for further morphometric and genetic studies on the taxon.

Schizothecium vesticola. [Descriptions of Fungi and Bacteria].

2020 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
New York ◽  
Prince Edward Island ◽  
Conservation Status ◽  
South Australia ◽  
Falkland Islands ◽  
Moscow Oblast ◽  
Faroe Islands ◽  
Krasnodar Krai ◽  
St Helena ◽  
Sakhalin Oblast

Abstract A description is provided for Schizothecium vesticola, a dung-inhabiting fungus. Some information on its associated organisms and substrata, dispersal and transmission, habitats and conservation status is given, along with details of its geographical distribution (Africa (Algeria, Morocco)), North America (Canada (Alberta, British Columbia, Manitoba, Nunavut, Prince Edward Island, Quebec, Saskatchewan, Yukon), Mexico, USA (Alaska, Colorado, Idaho, New York, Utah, Washington, Wyoming), South America (Argentina, Brazil, Chile, Falkland Islands/Malvinas), Arctic Ocean (Denmark (Greenland), Norway (Svalbard)), Asia (Iraq, Pakistan, Russia (Sakhalin Oblast)), Atlantic Ocean (Spain (Canary Islands), St Helena), Australasia (Australia (South Australia, Victoria, Western Australia), New Zealand), Europe (Austria, Belgium, Bulgaria, Denmark (including Faroe Islands), Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy (including Sicily), Netherlands, Norway, Poland, Romania, Russia (Krasnodar Krai, Moscow Oblast, Yaroslavl Oblast), Spain, Sweden, Ukraine, UK)).

Bombardioidea stercoris. [Descriptions of Fungi and Bacteria].

2020 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Czech Republic ◽  
New Zealand ◽  
Canary Islands ◽  
Oryctolagus Cuniculus ◽  
Bos Taurus ◽  
Conservation Status ◽  
Ovis Aries ◽  
Lepus Europaeus ◽  
Falkland Islands ◽  
Faroe Islands

Abstract A description is provided for Bombardioidea stercoris, a dung-inhabiting fungus associated with Bos taurus, Cervidae, Lepus europaeus, L. timidus, Oryctolagus cuniculus and Ovis aries. Some information on its morphology, economic impacts, habitats, dispersal and transmission and conservation status is given, along with details of its geographical distribution (Canada (Quebec), Argentina, Chile, Falkland Islands/Malvinas, Spain (Canary Islands), Australia (Victoria), New Zealand, Belgium, Czech Republic, Denmark (including Faroe Islands), Estonia, France, Germany, Irish Republic, Italy, Luxembourg, Netherlands, Poland, Slovakia, Slovenia, Spain, Sweden, UK and former Yugoslavia).

scholarly journals Responses of an Antarctic Southern Giant Petrel Population to Climate Change

2012 ◽  
pp. 75-79 ◽  
Author(s):  
Lucas Krüger ◽  
Martin Sander ◽  
Maria Virginia Petry
Keyword(s):  
Climate Change ◽  
Giant Petrel ◽  
Southern Giant Petrel

scholarly journals DIET OF SOUTHERN GIANT PETREL CHICKS IN ANTARCTICA: A DESCRIPTION OF NATURAL PREYS

2015 ◽  
pp. 31-34
Author(s):  
Ana Lucia Bezerra ◽  
Elisa de Souza Petersen ◽  
Maria Virgínia Petry
Keyword(s):  
Giant Petrel ◽  
Southern Giant Petrel

Taxonomic revision and morphological delimitation of Oxalis sect. Ripariae (Oxalidaceae)

Phytotaxa ◽  
2021 ◽  
Vol 529 (1) ◽  
pp. 125-159
Author(s):  
ANELISE NUERNBERG-SILVA ◽  
PEDRO FIASCHI
Keyword(s):  
Conservation Status ◽  
Taxonomic Revision ◽  
Second Step ◽  
Morphological Description ◽  
South American ◽  
Southern Brazil ◽  
Distribution Map ◽  
Phylogenetic Studies ◽  
A New Species ◽  
Near Threatened

Phylogenetic studies indicate that several infrageneric taxa in Oxalis require taxonomic updates to attain monophyly. In this contribution, we update the morphological delimitation of the South American Oxalis sect. Ripariae and provide a taxonomic revision of the currently accepted species. The sectional delimitation was carried out by comparing micro- and macromorphological features of Oxalis sect. Ripariae, O. sect. Corniculatae, and O. sect. Myriophyllum. These sections share yellow flowers and aerial stems. Glandular hairs and larger seeds with the surface longitudinally crested and with projections are exclusive to Oxalis sect. Ripariae. We accept 11 species in the section, including three previously placed in Oxalis sect. Corniculatae (i.e., O. eriocarpa, O. niederleinii, and O. refracta), but excluding O. serpens and O. subvillosa, which are moved to O. sect. Corniculatae. We also describe a new species (Oxalis lourteiginana), propose a new name and status for O. bifrons subsp. littoralis (now O. pampeana), the synonymization of O. irreperta with O. riparia, six second-step lectotypifications, and one epitypification. For each accepted species we provide a morphological description, illustrations, ecological and taxonomic information, conservation status following IUCN, and a geographic distribution map. Most species occur in southern Brazil, but the section is widespread also in Argentina, Uruguay, and eastern Paraguay. Six species are categorized as threatened and further three as near threatened. Besides, we provide an identification key for the taxa of the section.

Saccobolus quadrisporus. [Descriptions of Fungi and Bacteria].

2019 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
North America ◽  
South America ◽  
Arctic Ocean ◽  
Economic Impact ◽  
Geographical Distribution ◽  
Conservation Status ◽  
Falkland Islands ◽  
Checks And Balances ◽  
Islas Malvinas ◽  
Nenets Autonomous

Abstract A description is provided for Saccobolus quadrisporus. All records of this species are on dung, most and possibly all on bird dung. Some information on its habitat, dispersal and transmission, and conservation status is given, along with details of its geographical distribution (North America (Canada (Manitoba, Nunavut)), South America (Falkland Islands/Islas Malvinas), Arctic Ocean (Greenland, Norway (Svalbard and Jan Mayen)), Europe (Belgium, Iceland, Russia (Archangel Oblast, Nenets Autonomous Okrug), UK)). No evaluation has been made of any possible positive economic impact of this fungus (e.g. as a recycler, as a source of useful products, as a provider of checks and balances within its ecosystem, etc.). Also, no reports of negative economic impacts have been found.

Rediscovery and conservation of Linaria cossonii Bonnet & Barratte (Plantaginaceae) in Tunisia

Phytotaxa ◽  
2019 ◽  
Vol 423 (5) ◽  
pp. 284-288
Author(s):  
RIDHA EL MOKNI ◽  
LORENZO PERUZZI
Keyword(s):  
Population Dynamics ◽  
Mediterranean Region ◽  
Conservation Status ◽  
Red List ◽  
Northern Africa ◽  
Pine Forests ◽  
Annual Herb ◽  
The Mediterranean ◽  
Data Deficient ◽  
Near Threatened

The genus Linaria Miller (1754: 272) (Plantaginaceae) is the largest of tribe Antirrhineae, including ca. 150 species native to temperate regions of Europe, northern Africa, and Asia (Sáez et al. 2004, Mabberley 2008). The diversity centre of this genus is in the Mediterranean region (Sutton 1988), where 90 species occur (see e.g., Marhold 2011+). The flora of Tunisia includes 21 Linaria species and 10 subspecies, among which 6 taxa are endemic to the country (Pottier-Alapetite 1981, Le Floc’h et al. 2010, Marhold 2011+, Dobignard & Chatelain 2013, APD 2019). Tunisian endemics are still poorly known in terms of frequency, ecology and population dynamics, making difficult to assess their conservation status. Recently, the IUCN Global Red List 2018 (Valderrábano et al. 2018) assessed about 30 Tunisian taxa as Threatened (CR, EN, VU), Near Threatened (NT), and Data Deficient (DD). Among those listed in the latter category, there is Linaria cossonii Bonnet & Barratte (1896: 317), a usually annual herb up to 150 cm tall, growing within coastal sandy pine forests in the NE of Tunisia (CB & NE sensu Pottier Alapetite 1981). This species is rare and was scarcely seen after 1883, i.e. its date of first collection as derived from the protologue.

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