This study presents a hydrogeochemical analysis of spring responses (2013-2017) in the tropical mountainous region of the Central Valley of Costa Rica. The isotopic distribution of δO and δH in rainfall resulted in a highly significant meteoric water line: δH = 7.93·δO + 10.37 (r = 0.97). Rainfall isotopic composition exhibited a strong amount-dependent seasonality. The isotopic variation (δO) of two springs within the Barva aquifer was simulated using the FlowPC program to determine mean transit times (MTTs). Exponential-piston and dispersion distribution functions provided the best-fit to the observed isotopic composition at Flores and Sacramento springs, respectively. MTTs corresponded to 1.23 ± 0.03 (Sacramento) and 1.42 ± 0.04 (Flores) years. The greater MTT was represented by a homogeneous geochemical composition at Flores, whereas the smaller MTT at Sacramento is reflected in a more variable geochemical response. The results may be used to enhance modelling efforts in central Costa Rica, whereby scarcity of long-term data limits water resources management plans.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/10256016.2018.1546701 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Caste, wealth and geographic equity in program reach and expected outcomes: an exploratory analyses of in Nepal.
Front Nutr
December 2024
United States Agency for International Development, Kathmandu, Nepal.
Introduction: Monitoring and evaluation of maternal and child nutrition programs typically concentrates on overall population-level results. There is limited understanding, however, of how intervention reach and expected outcomes differ among sub-populations, necessary insight for addressing inequalities. These analyses aim to determine if maternal exposure to social and behavior change (SBC) interventions is associated with scales of maternal practices (antenatal care, iron and folic acid in pregnancy, diet in pregnancy, postnatal care, iron and folic acid postpartum, and maternal dietary diversity) and child practices (institutional birth, health mothers' group participation, growth monitoring and promotion, early initiation of breastfeeding and infant and young child feeding) in Nepal, overall and by wealth, caste, and geography.
View Article and Find Full Text PDFA survey of spiders (Araneae, Hersiliidae) from Xishuangbanna, Yunnan Province, China.
Biodivers Data J
December 2024
Institute of Zoology, Chinese Academy of Sciences, Beijing, China Institute of Zoology, Chinese Academy of Sciences Beijing China.
Background: Audouin, 1826 is the largest genus of the Hersiliidae Thorell, 1869, currently including 80 extant species that are widespread throughout most of forests of the Tropical realm. The tropical rainforest in Xishuangbanna is one of the most biodiversity-rich regions in China. However, can be regarded as being poorly represented in Xishuangbanna, with only two recorded species so far.
View Article and Find Full Text PDFCANAIRI: the Collaboration for Translational Artificial Intelligence Trials in healthcare.
Nat Med
January 2025
Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
Biome conservatism prevailed in repeated long-distance colonization of Madagascar's mountains by Helichrysum (Compositae, Gnaphalieae).
Mol Phylogenet Evol
January 2025
Systematics and Evolution of Vascular Plants (UAB), Associated Unit to CSIC by IBB, Departament de Biologia Animal, Biologia Vegetal i Ecologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
Colonization and diversification processes are responsible for the distinctiveness of island biotas, with Madagascar standing out as abiodiversity hotspot exceptionally rich in species and endemism. Regardless of its significance, the evolutionary history and diversification drivers of Madagascar's flora remain understudied. Here we focus on Helichrysum (Compositae, Gnaphalieae) to investigate the evolutionary and biogeographic origins of the Malagasy flora.
View Article and Find Full Text PDFHaplotype-resolved genome of a papeda provides insights into the geographical origin and evolution of Citrus.
J Integr Plant Biol
January 2025
Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
The publication of several high-quality genomes has contributed greatly to clarifying the evolution of citrus. However, due to their complex genetic backgrounds, the origins and evolution of many citrus species remain unclear. We assembled de novo the 294-Mbp chromosome-level genome of a more than 200-year-old primitive papeda (DYC002).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!