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5 results on '"Martiné, Eric"'

1. Fundmeldungen Neufunde – Bestätigungen – Verluste

Author

Bickler, Dieter, Bönsel, Dirk, Ehmke, Wolfgang, Engel, Uta, Gregor, Thomas, Händler, Arthur, König, Andreas, Lange, Ute, Martiné, Eric, Merz, Johannes, Nesemann, Hasko Friedrich, Nierbauer, Kai Uwe, Ruppel, Daniel, Sauerwein, Bernd, Schrauth, Fabian Etienne, Schubert, Enno, Seebauer, Lorenz, Siebert, Helmut, Sonnberger, Markus, Thieme, Michael, Urbanke, Patrick, Bickler, Dieter, Bönsel, Dirk, Ehmke, Wolfgang, Engel, Uta, Gregor, Thomas, Händler, Arthur, König, Andreas, Lange, Ute, Martiné, Eric, Merz, Johannes, Nesemann, Hasko Friedrich, Nierbauer, Kai Uwe, Ruppel, Daniel, Sauerwein, Bernd, Schrauth, Fabian Etienne, Schubert, Enno, Seebauer, Lorenz, Siebert, Helmut, Sonnberger, Markus, Thieme, Michael, and Urbanke, Patrick

Published
2023

3. Fundmeldungen Neufunde – Bestätigungen – Verluste

Author

Bönsel, Dirk, Jong, Martin de, Dühr, Klaus, Engel, Uta, Feller, Benjamin, Feuring, Christian, Gregor, Thomas, Händler, Arthur, Horn, Karsten, Klärner, Diemut, Kruse, Julia Marlene, Martiné, Eric, Nesemann, Hasko Friedrich, Nierbauer, Kai Uwe, Raabe, Uwe, Raehse, Susanne, Reischmann, Felix, Sauerwein, Bernd, Schmidt, Petra, Schrauth, Fabian Etienne, Schröder, Christof Nikolaus, Siebert, Helmut, Thieme, Michael, Wacker, Otto, Wittig, Rüdiger, Bönsel, Dirk, Jong, Martin de, Dühr, Klaus, Engel, Uta, Feller, Benjamin, Feuring, Christian, Gregor, Thomas, Händler, Arthur, Horn, Karsten, Klärner, Diemut, Kruse, Julia Marlene, Martiné, Eric, Nesemann, Hasko Friedrich, Nierbauer, Kai Uwe, Raabe, Uwe, Raehse, Susanne, Reischmann, Felix, Sauerwein, Bernd, Schmidt, Petra, Schrauth, Fabian Etienne, Schröder, Christof Nikolaus, Siebert, Helmut, Thieme, Michael, Wacker, Otto, and Wittig, Rüdiger

Abstract

Die Fundmeldungen in Band 34 von Botanik und Naturschutz in Hessen stammen von: Dirk Bönsel, Martin De Jong, Klaus Dühr, Uta Engel, Benjamin Feller, Christian Feuring, Thomas Gregor, Arthur Händler, Karsten Horn, Diemut Klärner, Julia Kruse, Eric Martiné, Hasko Friedrich Nesemann, Kai Uwe Nierbauer, Uwe Raabe, Susanne Raehse, Felix Reischmann, Bernd Sauerwein, Petra Schmidt, Fabian Schrauth, Christof Nikolaus Schröder, Helmut Siebert, Michael Thieme, Otto Wacker und Rüdiger Wittig.

Published
2022

4. Die Sippen der Roten Liste Hessens und ihre Ellenberg-Zeigerwerte – ein integrativer Ansatz

Author

Martiné, Eric, Schmalhaus, Leonard, Martiné, Eric, and Schmalhaus, Leonard

Abstract

Die aktuelle 5. Fassung der Roten Liste der Farn- und Samenpflanzen Hessens zeigt auf, dass dem positiven Bestandstrend einiger gefährdeter Sippen nach wie vor ein intensiver Rückgang der Grünlandarten gegenübersteht. Die Kombination der Ellenberg-Zeigerwerte der Sippen mit deren Gefährdungskategorien der Roten Liste zeigt, dass Magerkeitszeiger trockener, aber vor allem nasser Standorte im Offenland besonders gefährdet sind. Tendenziell trifft dies auch auf thermophile Sippen zu, insbesondere aber auf solche mit hoher Lichtzahl (Volllichtzeiger). Unter den Lebensformtypen stellen sich die Therophyten (Einjährige) als besonders gefährdet dar. Hohe Stickstoffeinträge sowie Nutzungsaufgabe oder -intensivierung werden als mögliche Ursachen diskutiert. Neben gefährdeten sollten auch die aktuell noch mittelhäufigen Arten, die die Vorwarnliste füllen, besser geschützt werden, um die Phytodiversität in Hessen langfristig zu erhalten., The current Red List of the Hessian vascular plants reveals that, although some species show positive population trends, there is still an unprecedented decline of grassland species ongoing. Species of dry but more prominently wet habitats with low nutrient and high light demands are particularly endangered as shown by the combination of Ellenberg indicator values with the respective conservation status of the species studied. Besides, therophytes (annuals) are also at elevated risk. High nitrogen inputs and intensive agricultural practice as well as abandonment of traditional land use as possible drivers are discussed. Conservation actions should focus more on moderately common plants that are currently regarded as possibly threatened to halt the loss of plant diversity in Hesse.

Published
2022

5. The South Asian monsoon maintains the disjunction of Rumex hastatus between the western Himalayas and the Hengduan Mountains, southwest China.

Author

Martiné, Eric, Zeuss, Dirk, Lampei, Christian, Sun, Hang, Miehe, Georg, and Opgenoorth, Lars

Subjects
*LAST Glacial Maximum, *RUMEX, *ECOLOGICAL niche, *VALLEYS, *ECOLOGICAL models, *RANDOM forest algorithms, *MONSOONS
Abstract

The Himalayas and the Hengduan Mountains of southwest China are hotspots of both climatic and species diversity. Yet, the distribution patterns of semi‐arid plant communities that have arisen throughout the region's complex uplift history remain insufficiently understood. In particular, the striking disjunctions of plants associated with dry river valleys that solely occur on the eastern and western ends of the Himalayan arc, but are absent in between, lack a sound explanation. Here we aim to disentangle the more recent environmental drivers behind the disjunction of the semi‐woody shrub Rumex hastatus found in dry river valleys of the western Himalayas and the Hengduan Mountains. We used ecological niche modeling and enhanced random forest parameterizations (down‐sampling) to infer suitable and unsuitable habitats within the study area during the last glacial maximum, under present climate conditions, and under four future climate scenarios. Annual and seasonal precipitation contributed the strongest to the discrimination between occurrences and the distribution gap, with the latter showing much higher rainfall amounts. The gap was also characterized by low overall habitat suitability, whereas occurrence probabilities in dry river valleys inhabited by R. hastatus were very high. However, some suitable but isolated habitats within the gap were detected in Bhutan and the southeastern Tibetan Plateau. The identified distribution gap was consistent in all simulated scenarios from the last glacial maximum to the near future. Our results suggest that the South Asian summer monsoon system acts as a persistent ecological barrier maintaining the disjunct distribution of dry river valley‐dwelling plants in the western Himalayas and the Hengduan Mountains. [ABSTRACT FROM AUTHOR]

Published
2022
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