scholarly journals Distribution of endemic plant species on an oceanic island – a geospatial analysis of La Palma (Canary Islands)

2011 ◽  
Vol 7 ◽  
pp. 170-175 ◽  
Author(s):  
Severin D.H. Irl ◽  
Carl Beierkuhnlein
Keyword(s):  
Plant Species ◽  
Canary Islands ◽  
Geospatial Analysis ◽  
Oceanic Island ◽  
Endemic Plant ◽  
La Palma ◽  
Endemic Plant Species

scholarly journals Graminoid Invasion in an Insular Endemism Hotspot and Its Protected Areas

Diversity ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 192 ◽  
Author(s):  
Anna J. Walentowitz ◽  
Severin D. H. Irl ◽  
Aurelio Jesús Acevedo Rodríguez ◽  
Ángel Palomares-Martínez ◽  
Vanessa Vetter ◽  
...  
Keyword(s):  
Species Richness ◽  
Protected Areas ◽  
Plant Species ◽  
Plant Species Richness ◽  
Grass Species ◽  
Suitable Habitat ◽  
Endemic Plant ◽  
Island Ecosystems ◽  
La Palma ◽  
Endemic Plant Species

Invasive plant species are increasingly altering species composition and the functioning of ecosystems from a local to a global scale. The grass species Pennisetum setaceum has recently raised concerns as an invader on different archipelagos worldwide. Among these affected archipelagos are the Canary Islands, which are a hotspot of endemism. Consequently, conservation managers and stakeholders are interested in the potential spreading of this species in the archipelago. We identify the current extent of the suitable habitat for P. setaceum on the island of La Palma to assess how it affects island ecosystems, protected areas (PAs), and endemic plant species richness. We recorded in situ occurrences of P. setaceum from 2010 to 2018 and compiled additional ones from databases at a 500 m × 500 m resolution. To assess the current suitable habitat and possible distribution patterns of P. setaceum on the island, we built an ensemble model. We projected habitat suitability for island ecosystems and PAs and identified risks for total as well as endemic plant species richness. The suitable habitat for P. setaceum is calculated to cover 34.7% of the surface of La Palma. In open ecosystems at low to mid elevations, where native ecosystems are already under pressure by land use and human activities, the spread of the invader will likely lead to additional threats to endemic plant species. Forest ecosystems (e.g., broadleaved evergreen and coniferous forests) are not likely to be affected by the spread of P. setaceum because of its heliophilous nature. Our projection of suitable habitat of P. setaceum within ecosystems and PAs on La Palma supports conservationists and policymakers in prioritizing management and control measures and acts as an example for the potential threat of this graminoid invader on other islands.

scholarly journals Fungal diversity in the rhizosphere of endemic plant species of Tenerife (Canary Islands): relationship to vegetation zones and environmental factors

2008 ◽  
Vol 3 (1) ◽  
pp. 79-92 ◽  
Author(s):  
Christin Zachow ◽  
Christian Berg ◽  
Henry Müller ◽  
Remo Meincke ◽  
Monika Komon-Zelazowska ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Plant Species ◽  
Canary Islands ◽  
Fungal Diversity ◽  
Endemic Plant ◽  
Vegetation Zones ◽  
Endemic Plant Species

scholarly journals Honeybees and Pollen as Indicators of Alien Plant Species in Two Native Forest Ecosystems of an Oceanic Island (La Palma, Canary Islands)

2009 ◽  
Vol 2 (1) ◽  
pp. 98-107 ◽  
Author(s):  
Lea de Nascimento ◽  
Juan D. Delgado ◽  
Javier Méndez ◽  
Rüdiger Otto ◽  
Manuel Arteaga ◽  
...  
Keyword(s):  
Plant Species ◽  
Canary Islands ◽  
Forest Ecosystems ◽  
Oceanic Island ◽  
Native Forest ◽  
Alien Plant Species ◽  
Alien Plant ◽  
La Palma

scholarly journals Mauritian coloured nectar no longer a mystery: a visual signal for lizard pollinators

2006 ◽  
Vol 2 (2) ◽  
pp. 165-168 ◽  
Author(s):  
Dennis M Hansen ◽  
Karin Beer ◽  
Christine B Müller
Keyword(s):  
Experimental Evidence ◽  
Plant Species ◽  
Flowering Plants ◽  
Visual Signal ◽  
Honest Signal ◽  
Endemic Plant ◽  
Floral Trait ◽  
Flower Visitation ◽  
Artificial Flowers ◽  
Endemic Plant Species

Most floral nectars are clear as water, and the enigmatic coloured nectar in three endemic plant species in Mauritius has puzzled scientists studying it. One hypothesis about the possible ecological function of coloured nectar is that it serves as a visual signal for pollinators. Recent studies have shown that at least two of the three Mauritian plant species with coloured nectar are visited and pollinated by endemic Phelsuma geckos. We here provide experimental evidence for the visual signal hypothesis by showing that Phelsuma ornata geckos prefer coloured over clear nectar in artificial flowers. In flowering plants, coloured nectar could additionally function as an honest signal that allows pollinators to assert the presence and judge the size of a reward prior to flower visitation, and to adjust their behaviour accordingly, leading to increased pollinator efficiency. Our study provides a first step in understanding this rare and intriguing floral trait.

scholarly journals Pyrrolizidine Alkaloids and Fatty Acids from the Endemic Plant Species Rindera umbellata and the Effect of Lindelofine-N-oxide on Tubulin Polymerization

Molecules ◽  
2013 ◽  
Vol 18 (9) ◽  
pp. 10694-10706 ◽  
Author(s):  
Boris Mandić ◽  
Milena Simić ◽  
Ivan Vučković ◽  
Ljubodrag Vujisić ◽  
Miroslav Novaković ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Plant Species ◽  
Pyrrolizidine Alkaloids ◽  
Tubulin Polymerization ◽  
Endemic Plant ◽  
Endemic Plant Species
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