Results 21 to 30 of about 301,294 (309)

The Importance of Poneromorph Ants for Seed Dispersal in Altered Environments

open access: yesSociobiology, 2013
Changes in species composition and an increase in the probability of local or regional extinctions alone are considered alarming consequences of human disturbances. However, these changes bring other damages that have passed unnoticed by scientists, such
Fabio Souto Almeida   +2 more
doaj   +3 more sources

Variability of pine cedar siberian seeds, which grow in different forest areas

open access: yesНаукові праці Лісівничої академії наук України, 2019
The indicators for seeds of Pne cedar Siberian (Pinus sibirica Du Tour) growing in different forest areas of the Krasnoyarsk territory and Irkutsk region have been presented. The object of research was the seeds harvested in the 20 populations.
Rimma Matveeva   +3 more
doaj   +1 more source

Seed production, infestation, and viability in Acacia tortilis (synonym: Vachellia tortilis) and Acacia robusta (synonym: Vachellia robusta) across the Serengeti rainfall gradient [PDF]

open access: yes, 2017
Tree recruitment in savannas proceeds in multiple stages characterized by successive filters occurring at the seed and seedling stages. The “demographic bottleneck” hypothesis suggests that such filters ultimately restrict tree density and prevent trees ...
Anderson, T. Michael   +3 more
core   +1 more source

Penentuan Kadar Karbohidrat pada Biji Cempedak Hutan (Artocarpus champeden Lour.) dengan Metoda Tembaga-Iodometri

open access: yesJurnal Riset Kimia, 2019
Forest Cempedak Seeds (Artocarpus champeden Lour.) Are types of seeds that are underutilized by humans. Forest Cempedak Seed Flour has nutritional content of carbohydrates, fats, and proteins that can be processed as ingredients for food. This study aims
Neri Fadjria   +3 more
doaj   +1 more source

Physiological and biochemical changes in Cedrela fissilis seeds during storage [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2020
: The objective of this work was to evaluate the effect of storage on the physiological quality of cedar (Cedrela fissilis) seeds, as well as to correlate the germination and vigor of the seeds with their main biochemical changes.
David da Silva   +4 more
doaj   +1 more source

Testing mechanisms of compensatory fitness of dioecy in a cosexual world [PDF]

open access: yes, 2019
Questions: All else being equal, populations of dioecious species with a 50:50 sex ratio have only half the effective reproductive population size of bisexual species of equal abundance. Consequently, there is a need to explain how dioecious and bisexual
Du, Y   +10 more
core   +2 more sources

Morphology of Chinese Chive and Onion (Allium; Amaryllidaceae) Crop Wild Relatives: Taxonomical Relations and Implications

open access: yesPlants
The genus Allium L. includes economically significant crops such as Chinese chives (Allium tuberosum Rottler ex Spreng.) and onions (Allium cepa L.), and is utilized in diverse agricultural applications, with numerous cultivars developed to date. However,
Min Su Jo   +4 more
doaj   +1 more source

Notes on Feeding Behavior of Atlanticus Testaceus (Orthoptera: Tettigoniidae) [PDF]

open access: yes, 2017
The Biology and Feeding behavior of Atlanticus testaceus (scudder) has received considerable attention by Gangwere (1966, 1967). While studying summer feeding of the adult Atlanticus testaceus in a Northern Michigan Jack Pine forest on the seeds of ...
Manley, Gary V.
core   +3 more sources

Telomere-to-telomere genome assembly of the Fraxinus mandshurica Rupr

open access: yesScientific Data
Fraxinus mandshurica Rupr, an important timber species, is widely distributed throughout northeastern China. In our study, we assembled the telomere-to-telomere (T2T) genome of F. mandshurica, generated by using Illumina short-read, PacBio HiFi long-read
Dandan Zhang   +10 more
doaj   +1 more source

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