Lichens on lignum in the coastal regions of western Spitsbergen (Svalbard)

Biologia ◽  
2008 ◽  
Vol 63 (6) ◽  
Author(s):  
Piotr Osyczka ◽  
Michał Węgrzyn
Keyword(s):  
Substrate Specificity ◽  
West Coast ◽  
First Record ◽  
High Arctic ◽  
Coastal Regions ◽  
The West ◽  
Svalbard Archipelago ◽  
Arctic Regions

AbstractEighteen species of eleven lichen genera were found on driftwood and worked timber deposited on the beaches in the Hornsund and Billefjorden regions (the west coast of Spitsbergen, Svalbard archipelago). Majority of them indicate low substrate specificity in the high arctic regions. Only three species (Caloplaca spitsbergensis, Lecanora mughicola, L. orae-frigidae) are typical for lignum. Most of the taxa are widespread in Svalbard. Species like: Caloplaca holocarpa, C. spitsbergensis, Protothelenella sphinctrinoidella, Rinodina archaea were sporadically reported till now. Lecanora mughicola was not reported from Svalbard up to the present and this is the first record of the species for the region.

scholarly journals Two new marine species of Cocconeis (Bacillariophyceae) from the west coast of Sweden

2019 ◽  
Author(s):  
Adil Y. Al-Handal ◽  
Catherine Riaux-Gobin ◽  
Regine Jahn ◽  
Angela Katarina Wulff ◽  
Alison Minerovic
Keyword(s):  
West Coast ◽  
Light And Electron Microscopy ◽  
Marine Species ◽  
Benthic Diatom ◽  
Small Island ◽  
Coastal Regions ◽  
The West ◽  
Two New Species ◽  
Ulva Intestinalis ◽  
Microscopy Examination

This paper is part of a project of studying benthic diatom biodiversity on marine coastal regions of Sweden with focus on rare and less known species. Two new species of Cocconeis Ehrenb. are described from Vrångö, a small island in the west coast of Sweden. Both species were found as epiphytic on the green alga Ulva intestinalis L. Cocconeis magnoareolata Al-Handal, Riaux-Gob., R.Jahn & A.K.Wulff sp. nov. is a small species not exceeding 9 µm in length and characterized by having large subquadrangular areolae on the sternum valve. Cocconeis vrangoensis Al-Handal & Riaux-Gob. sp. nov. appears similar to some taxa of the ‘Cocconeis scutellum complex’, but differs by its stria density on both valves and variable features of the areola and valvocopula ultrastructure. Detailed descriptions based on light and electron microscopy examination, a comparison with closely related taxa, as well as a description of the habitat of both species are here presented.

First record of Mobula japanica on the west coast of Australia

2014 ◽  
Vol 7 ◽  
Author(s):  
Kim Smith ◽  
Alan Pearce ◽  
Chris Dowling ◽  
Seema Fotedar
Keyword(s):  
West Coast ◽  
First Record ◽  
The West ◽  
Mobula Japanica

scholarly journals Late Cretaceous dwarf decapods from Guerrero, southern Mexico and their migration patterns

2006 ◽  
Vol 75 (03-04) ◽  
pp. 121-132 ◽  
Author(s):  
René H.B. Fraaije ◽  
Francisco J. Vega ◽  
Barry W.M. van Bakel ◽  
Luis M. Garibay-Romero
Keyword(s):  
New Species ◽  
North America ◽  
Late Cretaceous ◽  
West Coast ◽  
First Record ◽  
The West ◽  
Southern Mexico ◽  
Migration Patterns ◽  
Migratory Routes ◽  
Migratory Route

Two new brachyuran species are described for the Upper Cretaceous Mexcala Formation, Guerrero State, Mexico. Longusorbis quadratus new species (Coniacian, Temalac region) is the oldest and southernmost record for the genus. Xanthosia zoquiapensis new species (Campanian, Zoquiapa region) is the first record for the genus in Mexico. In addition, the age for Costacopluma bishopi Vega and Feldmann is discussed (Coniacian, Temalac region) and represents the oldest and southernmost record for Cretaceous representatives of this genus in North America. All specimens are considerably smaller compared to other species of the same genera and are interpreted as the first example of brachyuran dwarfism in the geological record. These species add new insight into possible migratory routes during the Late Cretaceous. Within Longusorbis, a northwestern migratory route is documented from the Coniacian in Mexico to the Campanian - Maastrichtian of the west coast of North America (Canada), whereas within the genus Xanthosia, a western migratory route from the Albian of Europe to the Campanian of Mexico is indicated. Costacopluma migrated east and north to the west coast of Africa, southeast North America and Greenland.

Hexanchid and Orthacodontid Shark Teeth from the Lower Tertiary of Vancouver Island, British Columbia

1971 ◽  
Vol 8 (1) ◽  
pp. 166-170 ◽  
Author(s):  
M. Waldman
Keyword(s):  
British Columbia ◽  
West Coast ◽  
First Record ◽  
Vancouver Island ◽  
Upper Eocene ◽  
The West ◽  
Lower Tertiary ◽  
Shark Teeth ◽  
Lower Oligocene

Teeth of the sharks Heptranchias and Orthacodus are described from beds of Upper Eocene—Lower Oligocene age on the west coast of Vancouver Island. This represents the youngest known geological occurrence of Orthacodus and is the first record of either genus in Canada.

scholarly journals First Record of Mink Frog, Rana septentrionalis, from Insular Newfoundland

2003 ◽  
Vol 117 (3) ◽  
pp. 477 ◽  
Author(s):  
Ian G. Warkentin ◽  
Christine E. Campbell ◽  
Kristin G. Powell ◽  
Tina D. Leonard
Keyword(s):  
West Coast ◽  
First Record ◽  
The West ◽  
Anuran Species ◽  
Two Populations

Two populations of the Mink Frog (Rana septentrionalis) were identified near Corner Brook Newfoundland during wider surveys for anurans on the west coast of the island. This brings to six the number of anuran species which are known to have been introduced to insular Newfoundland, with four known to be currently extant.

scholarly journals First record of the non-native green palpworm Marenzelleria viridis (Annelida: Spionidae) in the Clyde Estuary

2019 ◽  
Vol 27 (1) ◽  
pp. 45-48
Author(s):  
M. O’Reilly ◽  
S. Nowacki
Keyword(s):  
Alien Species ◽  
West Coast ◽  
First Record ◽  
The West ◽  
Low Salinity ◽  
First Occurrence ◽  
Marenzelleria Viridis ◽  
First Time

The non-native polychaete worm Marenzelleria viridis (Verrill, 1873) was found for the first time in the upper Clyde Estuary in 2016. This represents the first occurrence of this alien species on the west coast of Scotland. It appearsto be well established in low salinity waters at Govan Wharf where it dominated the biomass of riverbed infaunal invertebrates with densities of around 1,300 worms m-2.

scholarly journals Six new species of Anthuridae (Peracarida: Isopoda) from the southern Mexican Pacific

2021 ◽  
Vol 760 ◽  
Author(s):  
Ubaldo Jarquín-Martínez ◽  
María del Socorro García-Madrigal
Keyword(s):  
New Species ◽  
South America ◽  
West Coast ◽  
First Record ◽  
Diverse Group ◽  
Tropical Eastern Pacific ◽  
The West ◽  
Mexican Pacific ◽  
Number Of Species ◽  
First Time

Marine isopods, despite being a very diverse group, have been little studied in the Mexican South Pacific. After a revision of 171 specimens collected from Guerrero and Oaxaca, six new species, belonging to five genera, were discovered: Amakusanthura guerrerensis sp. nov., Cortezura caeca sp. nov., Mesanthura antenniformis sp. nov., M. estacahuitensis sp. nov., Skuphonura oaxaquensis sp. nov., and Tinggianthura mexicana sp. nov. In this work, the genera Amakusanthura Nunomura, 1977 and Tinggianthura Chew, Abdul-Rahim & Haji Ross, 2014, are recorded for the first time in the Tropical Eastern Pacific. Also, the distribution range of the genus Skuphonura Barnard, 1925 is increased from the west coast of South America to the southern Mexican Pacific, this being the first record of this genus in the Mexican Pacific. This study doubles the number of species recorded of Anthuridae from the Mexican Pacific, of six to 12 species.

scholarly journals Evaluation of IMERG satellite precipitation over the land-coast-ocean continuum – Part I: Detection

2021 ◽  
Author(s):  
Yagmur Derin ◽  
Pierre-Emmanuel Kirstetter ◽  
Jonathan J. Gourley
Keyword(s):  
West Coast ◽  
Water Flux ◽  
Integrated Approach ◽  
False Alarms ◽  
Formation Mechanisms ◽  
Coastal Regions ◽  
The West ◽  
Ground Validation ◽  
Detection Capabilities ◽  
Global Precipitation

AbstractAs a fundamental water flux, quantitative understanding of precipitation is important to understand and manage water systems under a changing climate, especially in transition regions such as the coastal interface between land and ocean. This work aims to assess the uncertainty in precipitation detection over the land-coast-ocean continuum in the Integrated Multi-satellitE Retrievals for Global Precipitation Measurement (IMERG) V06B. It is examined over three coastal regions of the U.S., i.e. the West Coast, the Gulf of Mexico, and the East Coast, each of which are characterized by different topographies and precipitation climatologies. Detection capabilities are contrasted over different surfaces (land, coast, ocean). A novel and integrated approach traces the IMERG detection performance back to its components (passive microwave, infrared, and morphing-based estimates). The analysis is performed by using high-resolution, high-quality Ground Validation Multi-Radar/Multi-Sensor (GV-MRMS) rainfall estimates as ground reference. The best detection performances are reported with PMW estimates (hit rates in the range of [25-39]%), followed by morphing ([20-34]%), morphing+IR ([17-27]%) and IR ([11-16]%) estimates. Precipitation formation mechanisms play an important role, especially in the West Coast where orographic processes challenge detection. Further, precipitation typology is shown to be a strong driver of IMERG detection. Over the ocean, IMERG detection is generally better but suffers from false alarms ([10-53]%). Overall, IMERG displays nonhomogeneous precipitation detection capabilities tracing back to its components. Results point toward a similar behavior across various land-coast-ocean continuum regions of the CONUS, which suggests that results can be potentially transferred to other coastal regions of the world.

Sign in / Sign up

Export Citation Format

Share Document