Results 91 to 100 of about 19,336 (231)

Evolution of coal-forming plants and floristic restorability of upper paleozoic coals

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2015
The floristic similarity of coal-bearing deposits of Donetsk, Karaganda, Pechora and Kuznetsk basins is caused by evolution of coal-forming plants of upper Paleozoic and is reflected in the petrographic composition of coals.
V. P. Ivanov
doaj   +1 more source

Vegetation of montane bogs in east-flowing catchments of northern New England, New South Wales [PDF]

open access: yes, 2013
The floristics of the montane bogs in east-flowing catchments of northern New England, north-eastern New South Wales (lat 28° 47’–31° 25’ S; long 151° 50’–152° 30’ E), are described from 62 full floristic survey sites (20 x 20 m in area).
Bell, Dorothy, Hunter, John T.
core  

Leveraging machine learning and citizen science data to describe flowering phenology across South Africa

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Recent shifts in flowering times are an index of, and a response to, human driven climate change. However, most information on these flowering changes is heavily skewed to the northern hemisphere. This imbalance limits our understanding of how climate change is affecting ecosystems, including the mismatches of flowering times between species, increased
Ross D. Stewart   +3 more
wiley   +1 more source

Diversity and floristic uniqueness of non-arboreal restingas of the Northern Coast of Bahia, Brazil [PDF]

open access: yesActa Botânica Brasílica
The Northern Coast of Bahia state (NCB) encompasses the northernmost stretch of the state coastline and harbors restinga ecosystems of exceptional biodiversity, ecological, and cultural importance.
Gabriel Costa Guerra   +2 more
doaj   +1 more source

Relações florístico-estruturais entre áreas de Cerrado sentido restrito sobre dois tipos de substrato na porção norte do Cerrado, Brasil [PDF]

open access: yes, 2013
Descrevemos e comparamos a composição florística, a riqueza, a diversidade de espécies e a estrutura do componente arbustivo-arbóreo em pares de Cerrado Típico e Cerrado Rupestre em duas localidades no Estado de Tocantins. Em cada localidade, alocamos 10
Lemos, Helena Lara   +3 more
core   +1 more source

Tracing holotype trajectories: Mapping the movement of the most valuable herbarium specimens

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Global efforts to protect biodiversity depend on fair access to key plant specimens. This study examines the distribution of 119,361 holotypes—unique herbarium specimens used to formally describe new plant species. By linking collection and storage data, we found that holotypes are increasingly held closer to their places of origin, particularly in ...
Dominik Tomaszewski   +2 more
wiley   +1 more source

Plant dispersal across the tropical Atlantic by wind and sea currents [PDF]

open access: yes, 2004
This review brings together evidence on the monophyly and ages of angiosperm lineages ranging across the tropical Atlantic with data on the direction, strength, and speed of sea currents and wind jets across that ocean. Mainly for pragmatic reasons (data
Renner, Susanne S.
core   +1 more source

Detecting extirpation: A localized approach to a global problem

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The global biodiversity crisis stems from a cascading series of extirpations driving species toward extinction. Addressing this crisis requires methods for early detection of extinction at local scales, where communities can mobilize conservation efforts.
Andrew D. F. Simon   +4 more
wiley   +1 more source

Seasonal patterns and interannual variability of phytoplankton in Lake Stechlin [PDF]

open access: yes, 2004
The paper presents results of detailed phytoplankton investigations in Lake Stechlin between 1994 and 2003. The analysis includes the picoplankton fraction (dominated by Cyanobium sp.) that regularly appears as a deep-layer chlorophyll maximum (DCM ...
Koschel, Rainer   +3 more
core  

Species diversity and distribution of ruderal flora on landfills in Maradi city, Niger [PDF]

open access: yes, 2017
Waste management continues to be a critical environmental issue in cities. It impacts on the well being of the population, the environment and the biodiversity. In the city of Maradi, in Niger, more interest is given to the problem in order to understand
Abdoul-Aziz, B. M. (Beido)   +5 more
core   +1 more source

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