Results 61 to 70 of about 3,593 (196)
Invariables and variables in the evolution of plant reproduction
Extended nutritional bond spanning two generations of sporophyte. Abstract Land plants have undergone great diversification and evolution in the past 400 million years. Although complex and hard to grasp, the sexual reproductive cycle (SRC) is an important unavoidable process in the evolution of plants.
Xin Wang
wiley +1 more source
Endemi su organizmi koji žive na određenom ograničenom geografskom području i nigdje drugdje na svijetu. Prema starosti razlikujemo reliktne endeme (paleoendeme) i neoendeme.
Bošković, Mirjam
core
Despite their unique evolutionary history, gymnosperms display a root economic space similar to that identified in angiosperms, likely reflecting common constraints on plants adapting to diverse environments in both groups. These findings provide greater confidence that patterns observed in broad syntheses justly capture patterns of trait diversity ...
Jessica R. Langguth +8 more
wiley +1 more source
Cícadas, fósiles vivientes del reino vegetal [PDF]
Fil: Martínez, Leandro Carlos Alcides. Instituto de Botánica Darwinion; ArgentinaFil: Artabe, Analía Emilia Eva. Universidad Nacional de La Plata.
Artabe, Analía Emilia Eva +1 more
core +2 more sources
Marcin Borys, Polska emigracja do Stanów Zjednoczonych do 1914 roku, Toruń 2011, ss. 224 [PDF]
recenzjaWydział Historyczno-Socjologiczny, Uniwersytet w ...
Pauliuchuk, Vadzim
core +1 more source
Evaluación del riesgo de extinción de Zamia prasina en la Provincia Biótica Península de Yucatán
Zamia prasina es una cícada nativa de la Provincia Biótica Península de Yucatán. Esta especie fue categorizada, según la Norma Mexicana NOM-059 del 2010, como en protección especial (Pr) y según las normas de la Unión Internacional para la Conservación ...
Grecia Montalvo-Fernández +4 more
doaj +1 more source
Abstract Premise In this study, we use simulations to determine how pollen flow and sampling constraints can influence the genetic conservation found in seed collections. Methods We simulated genotypes of parental individuals and crossed the parentals based on three different ranges of pollen flow (panmictic, limited, and highly limited) to create new ...
Kaylee J. Rosenberger, Sean Hoban
wiley +1 more source
Nathaniel Lord Britton (1859 - 1934) [PDF]
During his directorship of thirty-three years-a short space of time as the world goes-Doctor Britton had seen The New York Botanical Garden develop from little more than an idea to a well-developed tract of nearly 400 acres, with handsome buildings, an ...
Howe, Marshall Avery
core
Comparative anatomy of leaflets of Zamia acuminata and Z. pseudomonticola (Zamiaceae) in Costa Rica
The genus Zamia is morphologically and ecologically the most diverse of the order Cycadales. Throughout its history this genus has been restricted to the New World and is presently almost entirely restricted to the Neotropics.
Rafael Acuña-Castillo +1 more
doaj +2 more sources
Bringing the forest back: Restoration priorities in Colombia
Abstract Aim Colombia has committed to ambitious forest restoration targets which include a 1 million ha Bonn Challenge commitment and 6.47–8.31 million ha (rehabilitation and restoration, respectively) under the National Restoration Plan. Determining where and how to implement programs to achieve these targets remains a significant challenge ...
Brooke A. Williams +20 more
wiley +1 more source

