Results 21 to 30 of about 307 (133)
American Journal of Botany, Volume 109, Issue 5, Page 706-726, May 2022., 2022 Abstract Premise Accurate species delimitation is essential for evolutionary biology, conservation, and biodiversity management. We studied species delimitation in North American pinyon pines, Pinus subsection Cembroides, a natural group with high levels of incomplete lineage sorting.
José‐Rubén Montes +3 more
wiley +1 more source
Asynchronous flowering patterns in saguaro cacti (Carnegiea gigantea)
Ecosphere, Volume 12, Issue 12, December 2021., 2021 Abstract The saguaro cactus (Carnegiea gigantea [Engelm.] Britton & Rose) is a keystone species endemic to the Sonoran Desert of northern Mexico and the southwestern United States. The saguaro produces large white flowers near its stem apex (crown) during April–June, which bloom at night and close the following day.
Theresa Foley +4 more
wiley +1 more source
Human food use increases plant geographical ranges in the Sonoran Desert
Global Ecology and Biogeography, Volume 30, Issue 7, Page 1461-1473, July 2021., 2021 Abstract Aim Climate is usually regarded as the main determinant of plant species distributions. However, past human use of species for food might also have influenced distributions. We hypothesized that human‐mediated dispersal has resulted in food plants occupying more of their potential geographical range.
Carolyn Flower +7 more
wiley +1 more source
An updated phylogeny and adaptive evolution within Amaranthaceae s.l. inferred from multiple phylogenomic datasets. [PDF]
Ecol EvolOur results strongly demonstrated that Amaranthaceae s.l. was clustered with monophyletic traditional Chenopodiaceae (Clades I and II) and Amaranthaceae s.s. based on multiple phylogenomic datasets. Phylogenetic analysis of adaptive evolution showed that positively selected genes played a driving role in the evolutionary direction of Amaranthaceae s.l.
Xu H +7 more
europepmc +2 more sources
Widespread male sterility and trioecy in androdioecious Mercurialis annua: Its distribution, genetic basis, and estimates of morph-specific fitness components. [PDF]
Am J BotAbstract Premise Angiosperms range in sexual system from hermaphroditism through gynodioecy and androdioecy to dioecy. Trioecy, where females and males coexist with hermaphrodites, is rare. Recently, trioecy was documented in hexaploid populations of the wind‐pollinated herb Mercurialis annua in Spain.
Nguyen MT, Martignier T, Pannell JR.
europepmc +2 more sources
Cereus peruvianus (Koubo) new cactus fruit for the world
Revista Brasileira de Fruticultura, 2014 Several different species of the columnar cacti of the genera Stenocereus and Pachycereus, were introduced into different semi-arid ecozones in Israel and most of these efforts were of disappointing outcomes, the only exception being the Cereus ...
Yosef Mizrahi
doaj +1 more source
Ordenación de las poblaciones silvestres de pitayo y cardón en la Cuenca de Sayula, Jalisco
Botanical Sciences, 1999 Se estudian las relaciones ecológicas existentes entre las poblaciones silvestres de "pitayo" y "cardón" e n la Cuenca de Sayula, Jalisco. Se utilizó un enfoque multivariable considerando tres conjuntos de variables explicatorias: físico-geográficas (FG)
Francisco Martín Huerta-Martínez +3 more
doaj +1 more source
Sociobiology, 2014 One of the main consequences of human activities in semiarid zones is the transformation of habitats. In this work we studied the effect of this transformation on seed removal of five cacti species by the harvester ant Pogonomyrmex barbatus in the ...
Leticia Ríos-Casanova +2 more
doaj +1 more source
Population genomics and distribution modeling revealed the history and suggested a possible future of the endemic Agave aurea (Asparagaceae) complex in the Baja California Peninsula. [PDF]
Ecol EvolLittle is known about the phylogeography of the endemic agave species of the Baja California Peninsula. Using over 10,000 single‐nucleotide polymorphisms (SNPs) and spatial data from the Agave aurea species complex (i.e., A. aurea ssp. aurea, A. aurea ssp. promontorii, and A. aurea var. capensis), we determined genetic relationships within this complex
Klimova A +3 more
europepmc +2 more sources
An Aridamerican model for agriculture in a hotter, water scarce world
PLANTS, PEOPLE, PLANET, Volume 2, Issue 6, Page 627-639, November 2020., 2020 Climate change is dramatically restructuring agriculture and damaging crops, food security, and human health, especially in deserts. To radically redesign food systems to buffer against climatic disruptions, we focus on agroecological function, human health, and community well‐being.
Gary Paul Nabhan +13 more
wiley +1 more source