San Diego Thornmint () Populations Differ in Growth and Reproductive Responses to Differential Water Availability: Evidence from a Common Garden Experiment.

The responses of rare plants to environmental stressors will determine their potential to adapt to a rapidly changing climate. We used a common garden approach to evaluate how six populations of the annual San Diego thornmint ( Lamiaceae; listed as endangered in the state of California and as threatened by the US Fish and Wildlife Service) from across the species range respond in terms of growth (biomass, height, and width) and reproduction (seed production, floral production, and next generation seed viability) to experimental differences in water availability. We found a significant irrigation-by-population interaction on the aboveground growth, wherein the differences in the magnitude and direction of treatment did not correlate directly with climate variables in natural populations.

Forb composition gradients and intra-annual variation in a threatened Pacific Northwest Bunchgrass Prairie.

Grasslands are among the most threatened and least protected terrestrial biome. Grassland forbs: (1) account for most of the floral diversity; (2) are not well studied because they have been overshadowed by grass-centered research; and (3) have been a major source for biodiversity loss. The Pacific Northwest Bunchgrass Prairie (PNB) of North America is one of the most endangered grasslands on earth.

Dataset of plant composition change over seven years at the Zumwalt Prairie Preserve, Oregon, USA.

The data and analyses presented here were collected at the Zumwalt Prairie Preserve (ZPP), northeastern Oregon. Vegetation composition was measured within 124 (1-ha) plots using the line point intercept method [1,2]. These data include vascular plant species abundance matrices at two different time periods, seven years apart (2008/2009 & 2015/2016); boxplots of species abundance (cover and frequency) change over time; Non-parametric Multiplicative Regression (NPMR) estimated abundance of , an invading non-native annual grass, in geographic and ordination (Non-metric Multidimensional Scaling ordination; NMS) space over time.

Vegetation change over seven years in the largest protected Pacific Northwest Bunchgrass Prairie remnant.

Temperate grasslands are one of the most altered ecosystems on Earth. Consequently, conservation of important characteristics of such ecosystems (e.g.

Dataset of plant community composition in the Zumwalt Prairie Preserve, Oregon, USA.

These data support the research article: "Non-native species threaten the biotic integrity of the largest remnant Pacific Northwest Bunchgrass prairie in the United States" Endress et al. (2019) [1].The data were collected at the Zumwalt Prairie Preserve (Zumwalt), northeastern Oregon, USA, and include vascular plant species abundance matrices from 123 plots sampled in 2008 and 2009 and the estimated abundance of dominant species in community space.

Chronic leaf harvesting reduces reproductive success of a tropical dry forest palm in northern Mexico.

Palm leaves represent one of the most important non-timber forest products in tropical and subtropical regions. Brahea aculeata is an endemic palm of northwest Mexico, whose leaves are intensively exploited for roof thatch and handcrafts. As part of a long-term defoliation experiment, we evaluated the effects of different leaf harvest on foliar and reproductive traits of adults and attributes of their progeny.

Data on spatio-temporal patterns of wild fruit harvest from the economically important palm in the Peruvian Amazon.

These data are the foundation of the analyses and results published in the article "Spatio-temporal patterns of fruit extraction in the Peruvian Amazon: Implications for conservation and sustainability" (Horn et al., 2018) [1]. Here we include data on the volume of fruit arriving in the city of Iquitos, Peru from the surrounding region.

Data and analyses of woody restoration planting survival and growth as a function of wild ungulate herbivory.

These data and analyses support the research article "Wild ungulate herbivory suppresses deciduous woody plant establishment following salmonid stream restoration" Averett et al. (2017) [1]. The data and analyses presented here include: (1) planting density, survival and growth (two years post restoration) of riparian plantings along an ~11 km stream reach in northeastern Oregon as a function of herbivory treatment (protected/not protected from wild ungulate herbivory), habitat type, and planting species; and (2) abundance and height distributions of naturally occurring deciduous woody species along the restored stream reach two years post restoration.

Ungulate browsing maintains shrub diversity in the absence of episodic disturbance in seasonally-arid conifer forest.

Ungulates exert a strong influence on the composition and diversity of vegetation communities. However, little is known about how ungulate browsing pressure interacts with episodic disturbances such as fire and stand thinning. We assessed shrub responses to variable browsing pressure by cattle and elk in fuels treated (mechanical removal of fuels followed by prescribed burning) and non-fuels treated forest sites in northeastern Oregon, US.

The socio-cultural importance of Mauritia flexuosa palm swamps (aguajales) and implications for multi-use management in two Maijuna communities of the Peruvian Amazon.

Background: Fruit from the palm Mauritia flexuosa (aguaje) is harvested throughout the Peruvian Amazon for subsistence and commercial purposes. Recent estimates suggest that residents of Iquitos, the largest city in the region, consume approximately 148.8 metric tons of aguaje fruit per month, the vast majority of which is harvested by felling and killing adult female trees.

Do postfire mulching treatments affect plant community recovery in California coastal sage scrub lands?

In recent years, the use of postfire mulch treatments to stabilize slopes and reduce soil erosion in shrubland ecosystems has increased; however, the potential effects on plant recovery have not been examined. To evaluate the effects of mulching treatments on postfire plant recovery in southern California coastal sage scrub, we conducted a field experiment with three experimental treatments, consisting of two hydromulch products and an erosion control blanket, plus a control treatment. The area burned in 2007, and treatments were applied to six plot blocks before the 2008 growing season.