Diversified farming systems: farm practices and landscapes that intentionally include functional biodiversity at multiple spatial and/ temporal scales to maintain ecosystem services critical to agriculture (6) Conventional agriculture: typically uses synthetic pesticides, herbicides and fertilizers, may use organic soil amendments; fields are frequently planted in short rotations (2)

a b s t r a c tWomen and men often have differential access to and derive different benefits from ecosystem services; therefore, their perception and knowledge of ecosystem services also differ. Understanding these differences is critical to ensuring that policies aimed at enhancing access to and use of ecosystem services can provide benefits to all genders. We conducted a systematic review of studies that aim to understand the relationship between gender and ecosystem service perceptions to summarize research from this emerging topic and to identify patterns between gender and ecosystem service perceptions from different case studies. The results show that highly gendered ecosystem services include medicinal products from forest or mangrove ecosystems and freshwater supply. Women have a stronger perception of water quality and erosion control, soil formation, habitat conservation and sustaining biodiversity. Men, on the other hand, had more knowledge of fuel and timber and extreme event mitigation services. Our review also identifies the limitations of sample size for this interdisciplinary topic, calls for more case studies and comparative studies to identify relationships between gender and ecosystem service perceptions, and calls for the development of models on ecosystem services that incorporate gender. Finally, we discuss how our review can augment existing gender frameworks for policymaking.

Alternative wetting and drying (AWD) is an increasingly popular water-saving practice in rice production in the Vietnamese Mekong River Delta, especially considering the impact of projected climate change and reduced water availability. Unfortunately, it is very difficult to determine adoption without deploying thousands of costly household surveys. This research used European Space Agency Sentinel-1a and 1b radar data, combined with in-situ moisture readings, to determine AWD adoption through change detection of a time series wetness index (WI). By using a beta coefficient of the radar data, the WI avoided the pitfalls of cloud cover, surface roughness, and vegetative interference that arise from the sigma coefficient data. The analysis illustrated an AWD adoption likelihood scale across the delta and it showed potential for the use of remotely sensed data to detect adoption. Trends across the Vietnamese delta showed higher adoption rates inland, with lower adoption of AWD in the coastal provinces. These results were supported by a simultaneous effort to collect household level adoption data as part of the same project. However, correlation between the WI values and in situ soil moisture meter readings were most accurate in alluvial soils, illustrating a particularly strong relationship between soil type and WI model robustness. The research suggests that future change detection efforts should focus on retrieving a multi-season dataset and employing a power density analysis on the time series data to fully understand the periodicity of dry down patterns.

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