Article
Forestry
Jose Villanueva-Diaz, Aldo R. Martinez-Sifuentes, Geronimo Quinonez-Barraza, Estrada-Avalos, Emilia R. Perez-Evangelista, Fatima del Rocio Reyes-Camarillo, Rocio Reyes-Camarillo
Summary: The oak species in Mexico show high sensitivity to historical climate variations, with tree ring width closely related to precipitation, temperature, and climate changes.
TREES-STRUCTURE AND FUNCTION
(2021)
Article
Forestry
Aldo Rafael Martinez-Sifuentes, Jose Villanueva-Diaz, Arian Correa-Diaz, Juan Estrada-Avalos, Ramon Trucios-Caciano, Josue Raymundo Estrada-Arellano, Gabriel Fernando Cardoza-Martinez, Miguel Angel Garza-Martinez
Summary: In this study, the researchers successfully reconstructed precipitation and temperature climate in the Mayo river basin in Northern Mexico using conifer tree rings and spatial climate information. They analyzed the high and low-frequency variability of climate in the region and found a significant decrease in precipitation and increase in temperature for the last 270 years. The reconstructed climate data were also associated with the El Nino Southern Oscillation phenomenon and Standardized Evapotranspiration-Precipitation Index.
TREES-STRUCTURE AND FUNCTION
(2022)
Review
Plant Sciences
Adolfo Rosati, Enrico Maria Lodolini, Franco Famiani
Summary: This article reviews the literature on olive fruit development, discussing factors that affect both fruit size and number, and analyzes different mechanisms regulating different phases of fruit development. It is found that these mechanisms can be considered as different aspects of the same overall strategy.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Environmental Sciences
Lukasz Pawlik, Brian Buma, Malgorzata Wistuba, Ireneusz Malik, Albert Slezak
Summary: Trees provide important ecosystem services and can serve as bioindicators of terrain stability. This study evaluated the effects of a heavy rainfall event on hillslope instability and rockfalls in a dry montane forest system. The researchers found that trees can effectively indicate hillslope instability, but predicting extreme climate events based on this method is challenging.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Plant Sciences
Fenfen Li, Yanhua Jia, Shengen Zhou, Xinyu Chen, Qiaoli Xie, Zongli Hu, Guoping Chen
Summary: MADS-domain transcription factors play crucial roles in flower and fruit development in angiosperms. SlMBP22 overexpression affects floral morphology and the expression of floral homeotic genes in tomato by forming dimers with other floral proteins, resulting in reduced fruit size and altered seed dormancy.
JOURNAL OF PLANT PHYSIOLOGY
(2022)
Article
Ecology
Federico Ignacio Isla, Marcela A. Espinosa
Summary: The Colorado River has experienced significant reduction in drainage area and annual discharge, with recurrent floods occurring during anomalous ENSO years. Ancient remains were found near the modern channel, indicating river blockages and formation of new distributaries. Human alterations have increased salinity and crop risks in the lower floodplain, highlighting the need for monitoring these desertification processes in relation to climate change predictions.
JOURNAL OF ARID ENVIRONMENTS
(2021)
Article
Computer Science, Interdisciplinary Applications
Uddhav Bhattarai, Manoj Karkee
Summary: Flower and fruit count is a critical metric for crop-load management and harvesting strategies. This study proposes a deep learning-based counting network that learns from image-level annotation to accurately estimate flower and fruit count in commercial orchard images.
COMPUTERS IN INDUSTRY
(2022)
Article
Plant Sciences
Yuan Shi, Bangqian Song, Qin Liang, Deding Su, Wang Lu, Yudong Liu, Zhengguo Li
Summary: Flower and fruit abscission is a crucial physiological process for horticultural plants, which is regulated by multiple factors including hormones, peptides, carbohydrates, polyamines, and cell wall modifying proteins. This review provides an overview of recent studies on the molecular regulatory mechanisms, structure and location of abscission zones, and other factors affecting flower and fruit abscission. The aim is to facilitate the understanding of flower and fruit abscission for horticultural plants.
HORTICULTURAL PLANT JOURNAL
(2023)
Article
Robotics
Abubakar Siddique, Amy Tabb, Henry Medeiros
Summary: This study proposes a self-supervised learning strategy to enhance the sensitivity of segmentation models to different flower species using automatically generated pseudo-labels. The accuracy of the model predictions is improved through data augmentation and refinement methods.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2022)
Article
Biodiversity Conservation
J. Gonzalo N. Irisarri, Marcos Texeira, Martin Oesterheld, Santiago R. Veron, Facundo Della Nave, Jose M. Paruelo
Summary: The study aimed to quantify long-term changes in aboveground net primary production (ANPP) in Patagonia between 1981 and 2012, revealing that ANPP interannual variation is mainly influenced by El Nino Southern Oscillation (ENSO) and precipitation, with the human impact being predominantly negative.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Forestry
Felipe S. Carevic, Roberto Contreras, Erico Carmona, Ermindo Barrientos
Summary: This study investigated the interannual evolution of ecophysiological parameters and their effects on fruit production and flower sprouting in Prosopis strombulifera in the Atacama Desert. Positive relationships were found between plant water parameters, specific leaf area (SLA), and chlorophyll variables measured in spring at flower sprouting and during fruit production. A negative correlation was found between the mean of the minimum temperatures in spring and flower sprouting.
Article
Engineering, Environmental
Homa Salehabadi, David G. Tarboton, Bradley Udall, Kevin G. Wheeler, John C. Schmidt
Summary: Since 1995, much has been learned about Colorado River hydrology. By analyzing historical flows, tree-ring reconstructions, and climate change, researchers have gained a better understanding of future drought conditions. The study shows that even more severe droughts are possible, based on tree-ring reconstructed flows and future flows projected from climate models. This has significant implications for the management and operation of reservoirs in the Colorado River Basin.
JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION
(2022)
Article
Plant Sciences
Katherine Y. Barragan-Fonseca, Quint Rusman, Daan Mertens, Berhane T. Weldegergis, Joseph Peller, Gerrit Polder, Joop J. A. van Loon, Marcel Dicke
Summary: Soil composition and herbivory can affect plant traits, including flower traits, potentially influencing plant-pollinator interactions. We investigated the effects of insect exuviae as soil amendment and aboveground insect herbivory on Brassica nigra plants. Our findings showed that soil amendment increased flower quantity and volatile organic compound (VOC) emission, while herbivory reduced petal area and VOC emission. Furthermore, soil amendment and herbivory interacted in their effect on petal reflectance spectrum and VOC emission.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Horticulture
Tiantian Ye, Xue Liu, Xiaojie Liang, Xueyan Zhu, Qian Bai, Shuchai Su
Summary: Heavy flower thinning in Camellia oleifera leads to increased fruit size and weight, as well as higher seed and dry kernel rate of fresh fruit, soluble protein and oil accumulation in seeds. However, it also decreases fruit yield, and certain fatty acids proportion in the oil composition like palmitic, palmitoleic, linoleic, and linolenic acid.
Article
Forestry
Abilio Santos-Malengue, David Ariza-Mateos, Rafael Navarro-Cerrillo, Antonio M. Cachinero-Vivar, J. Julio Camarero
Summary: Tree-ring studies are lacking in tropical African forests, particularly in seasonally dry miombo forests. This study focused on the Angolan miombo, where tree-ring data is urgently needed to estimate the age at which the minimum cutting diameter is reached. The study found that wet conditions enhanced growth and led to greater growth consistency among individuals, with the dry site showing higher sensitivity to climate.
Article
Forestry
Marin Pompa-Garcia, J. Julio Camarero, Michele Colangelo
Summary: Seasonal patterns of wood formation were examined in mixed pine-oak forests in a semi-arid Mexican forest. The study found that different tree species exhibited distinct seasonal variations in wood formation. Temperature and evaporation were found to be the key factors affecting cambium activity and cell radial enlargement in pines. High temperature and vapor pressure deficit were associated with cell-wall thickening and the maturation of earlywood and latewood tracheids in pines. In oak, the onset of cambial activity was constrained by high minimum temperatures, and vessel radial enlargement and radial increment were influenced by temperature and evaporation. The study highlights the importance of water availability and temperature in shaping wood formation patterns in mixed pine-oak forests.
JOURNAL OF FORESTRY RESEARCH
(2023)
Editorial Material
Biology
J. Julio Camarero
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Environmental Sciences
Enrico Tonelli, Alessandro Vitali, Francesco Malandra, J. Julio Camarero, Michele Colangelo, Angelo Nole, Francesco Ripullone, Marco Carrer, Carlo Urbinati
Summary: Late spring frosts have a negative impact on the productivity and growth of temperate beech forests. This study investigated the effects of late spring frosts on forest cover and radial growth of European beech populations at different elevations. The results showed that the growth reduction caused by late spring frosts ranged from 36% to 84%, but recovery occurred within 1-2 years after the event. There was no clear relationship between beech forest elevation and occurrence of late spring frosts defoliations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Forestry
Antonio Gazol, Ester Gonzalez de Andres, Michele Colangelo, Cristina Valeriano, Jesus Julio Camarero
Summary: Recent drought-induced dieback affects forest dynamics, which are also influenced by past management. In western Pyrenean silver fir stands, dieback coincides with past management legacies, but their impacts on forest growth, structure, and composition are unknown. This study examines how dieback interacts with past human use and modulates the dynamics of silver fir forests. Results show that silver fir growth declines in response to drought, and declining sites have lower density and higher dependence on water availability. Tree death increases the cover of dominant understory plants. Past management activities leave a mark on silver fir growth and affect tree density. Further monitoring is needed to fully understand the influences of past management legacies and current climate change on forest dynamics.
Article
Agronomy
Lea Veuillen, Bernard Prevosto, Raquel Alfaro-Sanchez, Vincent Badeau, Giovanna Battipaglia, Santiago Begueria, Felipe Bravo, Thomas Boivin, J. Julio Camarero, Katarina Cufar, Hendrik Davi, Martin De Luis, Antonio Del Campo, Miren Del Rio, Alfredo Di Filippo, Michael Dorman, Marion Durand-Gillmann, Juan Pedro Ferrio, Guillermo Gea-Izquierdo, Maria Gonzalez-Sanchis, Elena Granda, Frederic Guibal, Emilia Gutierrez, Manon Helluy, Ali El Khorchani, Tamir Klein, Joseph Levillain, Juan Carlos Linares, Angela Manrique-Alba, Jordi Martinez Vilalta, Antonio J. Molina, Cristina Moreno-Gutierrez, Antoine Nicault, Jorge Olivar, Andreas Papadopoulos, Avi Perevolotsky, Cyrille Rathgeber, Montse Ribas, Francesco Ripullone, Irene Ruano, Francois-Xavier Saintonge, Raul Sanchez-Salguero, Dimitrios Sarris, Xavier Serra-Maluquer, Tal Svoray, Clara Tallieu, Teresa Valor, Michel Vennetier, Jordi Voltas, Maxime Cailleret
Summary: Severe droughts have a significant impact on tree growth and forest productivity globally, and this impact is expected to worsen in the coming decades. However, the specific effects of drought intensity and climatic conditions in countries across the Mediterranean basin are still uncertain.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Forestry
Ester Gonzalez de Andres, Michele Colangelo, Reyes Luelmo-Lautenschlaeger, Jose Antonio Lopez-Saez, Jesus Julio Camarero
Summary: This study compared the radial growth patterns and responses to climate, river, or reservoir flows, and a drought index of southernmost populations of birch trees in Spain with populations located in northern Spain. The main climatic constraint on birch growth was a high summer water deficit, and local hydrological conditions were particularly important in southernmost populations. Additionally, the study found distinct growth patterns and climate-growth associations of birch populations across Europe, showing that populations further south and in warmer locations were more sensitive to drought stress. Protection of threatened birch populations at their southern distribution limit requires proper management of local water resources.
Article
Forestry
Marin Pompa-Garcia, Eduardo D. Vivar-Vivar, Ernesto A. Rubio-Camacho, Jesus Julio Camarero
Summary: Evapotranspiration demand has increased due to rising temperatures, impacting forest productivity and modifying carbon uptake by forests. This study investigates the relationships between climate and carbon capture in 15 conifer species in Mexico, analyzing dendroecological data. Precipitation and maximum temperature were the primary factors influencing changes in carbon capture, with minimum temperature and drought index playing secondary roles. Winter conditions had the greatest impact on carbon capture, particularly wet and cool conditions, but influences from fall and summer were also significant. Understanding seasonal climatic influences is important for carbon uptake and forest productivity in drought-prone regions.
Article
Ecology
Alexis Gardiner Jorgensen, Raquel Alfaro-Sanchez, Steven G. Cumming, Alison L. White, Genevieve eliane Degre-Timmons, Nicola Day, Merritt Turetsky, Jill F. Johnstone, Xanthe J. Walker, Jennifer L. Baltzer
Summary: Climate change is causing an increase in fires in the boreal biome of North America. The recovery of vegetation after fire is influenced by time after fire and local environmental conditions, with soil moisture being the most significant factor. This study provides valuable insights into postfire vegetation recovery and highlights the importance of soil moisture for predicting the impacts of increased fire activity. Overall, this research is of great importance for northern communities and land managers.
Article
Ecology
J. Julio Camarero, Michele Colangelo, Angelo Rita, Andrea Hevia, Manuel Pizarro, Jordi Voltas
Summary: Assessing the impacts of defoliation caused by insect herbivores on tree growth, carbon budget and water use requires multi-proxy approaches. In this study, a methodological framework was presented to determine the impacts of the pine processionary moth on pine forests in northeastern Spain. The results showed significant reductions in tree cover, growth, wood density, and changes in wood features. Multi-proxy assessments combining several variables have the potential to improve our ability to understand and reconstruct insect outbreaks.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Forestry
Isabel Aullo-Maestro, Cristina Gomez, Laura Hernandez, J. Julio Camarero, Mariola Sanchez-Gonzalez, Isabel Canellas, Antonio Vazquez de la Cueva, Fernando Montes
Summary: The study examines the dynamics of the Abies alba Mill.-Pinus uncinata Ramond. ecotone along altitudinal and protection level gradients. It is found that there has been an upward expansion of A. alba to the subalpine belt in the last decades as a result of stand maturation after logging cessation.
ANNALS OF FOREST SCIENCE
(2023)
Article
Forestry
Tong Zheng, Jordi Martinez-Vilalta, Raul Garcia-Valdes, Antonio Gazol, J. Julio Camarero, Changcheng Mu, Maurizio Mencuccini
Summary: This study used the International Tree-Ring Data Bank (ITRDB) to examine the growth responses of conifer trees to severe soil and atmospheric droughts during and after the 20th century. The results showed that the sensitivities of resilience to atmospheric vapor pressure deficit (VPD) and soil drought (SPEI) changed throughout the century and had important effects on tree growth. However, despite these adjustments, resilience was still lower at the end of the century compared to the beginning.
Article
Forestry
Marin Pompa-Garcia, Julio Camarero, Eduardo D. Vivar-Vivar
Summary: The study found that the radial growth of trees is influenced by hydroclimate, but the drivers of their spatial and population variability are not well understood. By sampling conifer populations at different locations in western and eastern Mexico, the study investigated how growth responses are related to climate variables, indices, and drought index. The results showed that the western species have lower growth rates and are more responsive to precipitation and temperature in spring compared to the eastern species. The study also found stronger correlations between radial growth and climate indices in the western region. Additionally, different species show varying responsiveness to spring drought in the two regions. These findings provide insights into future changes in Mexican conifer forests under climate change.
Article
Forestry
Kirsten A. Reid, Nicola J. Day, Raquel Alfaro-Sanchez, Jill F. Johnstone, Steven G. Cumming, Michelle C. Mack, Merritt R. Turetsky, Xanthe J. Walker, Jennifer L. Baltzer
Summary: Black spruce, an important conifer in boreal North America, releases seeds after fire. However, intensifying fire activity may reduce seed rain, affecting seedling establishment and stand composition of black spruce.
ANNALS OF FOREST SCIENCE
(2023)
Article
Agronomy
Ziyi Wang, Xiaohong Liu, Josep Penuelas, J. Julio Camarero, Xiaomin Zeng, Xueyan Liu, Liangju Zhao, Guobao Xu, Lixin Wang
Summary: This study investigates the long-term growth response and driving factors of mature Qinghai spruce trees in northwest China. The results show that improved nitrogen availability and favorable climate conditions benefit tree growth, and the negative effects of low nitrogen availability on growth can be mitigated by high atmospheric CO2 concentration and warmer-wetter climate conditions.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Forestry
Filipe Campelo, Alvaro Rubio-Cuadrado, Fernando Montes, Michele Colangelo, Cristina Valeriano, J. Julio Camarero
Summary: This study investigates the effects of different leaf and xylem traits on wood formation and tree-ring development in coexisting tree species in a Mediterranean forest. The simulations show that climate warming will result in reduced growth in both deciduous and evergreen oaks, with evergreen oaks being better able to recover after drought.
