{"query_echo":{"q":"","filters":{"analysis_type":["experimental"]},"warnings":[{"code":"facet_value_not_in_vocabulary","message":"Value 'experimental' for facet 'analysis_type' is not in the controlled vocabulary."}]},"total":{"value":4,"relation":"eq"},"page":1,"page_size":20,"self":"https://climateinsightsdirectory.org/api/v1/search?analysis_type=experimental","stability":"beta","ai_marking":{"digital_source_type":{"uri":"http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia","name":"Created using Generative AI"},"notice":"Summary and key insights are generated using artificial intelligence."},"results":[{"id":"iai-000186","url":"https://climateinsightsdirectory.org/document/iai-000186","title":"Scaling copepod grazing in a coastal upwelling system: the importance of community size structure for phytoplankton C flux","publisher":{"name":"Inter-American Institute for Global Change Research","organization":"inter-american-institute-for-global-change-research"},"document_type":"research paper","language":"en","date_published":"2025-01-12","source_url":"https://iai.int/es/pub_acad/scaling-copepod-grazing-in-a-coastal-upwelling-system-the-importance-of-community-size-structure-for-phytoplankton-c-flux/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","analysis_type"],"summary":{"text":"The study demonstrates that copepod grazing is a size-dependent process where communities dominated by small-sized species significantly increase the efficiency of carbon transfer from phytoplankton compared to communities dominated by larger species.","ai_generated":true,"unit":"iai-000186#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"C-specific ingestion rates for copepods are size-dependent, with observed values ranging from 0.14 to 353.97 (ng C µg C⁻¹ h⁻¹).","ai_generated":true,"unit":"iai-000186#insight-1","date_modified":"2026-10-23"},{"text":"The impact of grazing on phytoplankton is determined by the size structure of the copepod community. When small-sized species (0.1-10 µg C ind⁻¹), such as Paracalanus cf. indicus, Acartia tonsa, Oncaea spp. and Corycaeus spp., dominate the biomass, the C-specific grazing impact can increase by a factor of 4.","ai_generated":true,"unit":"iai-000186#insight-2","date_modified":"2026-10-23"},{"text":"While communities dominated by larger-sized copepods (10-100 µg C ind⁻¹), including Calanus chilensis, Calanoides patagoniensis and Rhyncalanus nasutus, may have higher total zooplankton biomass, they exhibit a sharp decrease in the efficiency of carbon transfer via herbivores.","ai_generated":true,"unit":"iai-000186#insight-3","date_modified":"2026-10-23"}],"climate_tags":[],"geography_discussed":[],"frame_perspective":[],"analysis_type":["experimental","modelling"]},{"id":"sei-000842","url":"https://climateinsightsdirectory.org/document/sei-000842","title":"Modelling crop yield ozone","publisher":{"name":"Stockholm Environment Institute","organization":"stockholm-environment-institute"},"document_type":"research paper","language":"en","date_published":"2019-04-01","source_url":"https://www.sei.org/publications/modelling-crop-yield-ozone/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","analysis_type"],"summary":{"text":"The study finds that accelerated leaf senescence is the primary mechanism by which ozone pollution reduces crop yield, rather than direct impairment of photosynthesis in un-senesced leaves. It concludes that the Phytotoxic Ozone Dose (POD), based on stomatal O3 flux, is a more accurate predictor of physiological response than 24-hour mean concentrations or AOT40.","ai_generated":true,"unit":"sei-000842#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Accelerated leaf senescence is identified as the primary driver of ozone-induced yield loss in most agricultural settings, as negative effects on photosynthesis were only observed in conjunction with O3-induced senescence.","ai_generated":true,"unit":"sei-000842#insight-1","date_modified":"2026-10-23"},{"text":"The Phytotoxic Ozone Dose (POD), which simulates stomatal O3 flux using a multiplicative stomatal conductance model, outperformed both 24-hour mean concentrations and AOT40 (accumulated O3 exceeding 40 ppb during daylight hours) in predicting physiological responses.","ai_generated":true,"unit":"sei-000842#insight-2","date_modified":"2026-10-23"},{"text":"Experimental results from 2015 and 2016 involving two wheat cultivars showed that leaf senescence occurred earlier as average POD increased, though the two cultivars exhibited significantly different responses to this senescence.","ai_generated":true,"unit":"sei-000842#insight-3","date_modified":"2026-10-23"}],"climate_tags":["crop yield"],"geography_discussed":[],"frame_perspective":[],"analysis_type":["experimental","modelling"]},{"id":"sei-000358","url":"https://climateinsightsdirectory.org/document/sei-000358","title":"Processes controlling DOC in pore water during simulated drought cycles in six different UK peats","publisher":{"name":"Stockholm Environment Institute","organization":"stockholm-environment-institute"},"document_type":"research paper","language":"en","date_published":"2012-07-02","source_url":"https://www.sei.org/publications/processes-controlling-doc-in-pore-water-during-simulated-drought-cycles-in-six-different-uk-peats/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","analysis_type"],"summary":{"text":"The study found that dissolved organic carbon (DOC) concentrations in UK peatlands decrease during drought due to acidification, as measured by acid neutralising capacity (ANC), rather than being primarily driven by soil biota.","ai_generated":true,"unit":"sei-000358#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Simulated water table draw-down across all six sites led to a concurrent increase in sulphate (SO4) and a decrease in dissolved organic carbon (DOC), though the strength of this relationship varied by site.","ai_generated":true,"unit":"sei-000358#insight-1","date_modified":"2026-10-23"},{"text":"The decrease in DOC was consistently related to acidification as measured by pore water acid neutralising capacity (ANC), which proved to be a more reliable measure than sulphate alone because it accounts for variations in acid anions and base cation concentrations.","ai_generated":true,"unit":"sei-000358#insight-2","date_modified":"2026-10-23"},{"text":"Rapid increases in DOC following rewetting occurred without a corresponding increase in soil respiration, indicating that DOC levels are primarily controlled by soil acidity rather than soil biota.","ai_generated":true,"unit":"sei-000358#insight-3","date_modified":"2026-10-23"}],"climate_tags":["peatland","drought"],"geography_discussed":[],"frame_perspective":[],"analysis_type":["experimental"]},{"id":"sei-000060","url":"https://climateinsightsdirectory.org/document/sei-000060","title":"Soil respiration: implications of the plant-soil continuum and respiration chamber collar insertion depth on measurement and modelling of soil CO2 efflux rates in three ecosystems","publisher":{"name":"Stockholm Environment Institute","organization":"stockholm-environment-institute"},"document_type":"research paper","language":"en","date_published":"2011-02-01","source_url":"https://www.sei.org/publications/soil-respiration-implications-of-the-plant-soil-continuum-and-respiration-chamber-collar-insertion-depth-on-measurement-and-modelling-of-soil-co2-efflux-rates-in-three-ecosystems/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","analysis_type"],"summary":{"text":"The study finds that inserting soil collars, even by a few centimetres, consistently underestimates total soil CO2 efflux by severing surface roots, with the magnitude of the reduction depending on the ecosystem's root distribution and the depth of insertion.","ai_generated":true,"unit":"sei-000060#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Collar insertion by only a few centimetres reduces total soil CO2 efflux across all three studied ecosystems by an average of 15%, with some instances reaching reductions of 30–50%. This reduction is directly proportional to the amount of fine roots severed during insertion.","ai_generated":true,"unit":"sei-000060#insight-1","date_modified":"2026-10-23"},{"text":"The impact of collar insertion varies by ecosystem; the greatest reduction in CO2 efflux occurred in the shallow-rooted peatland system, while the least reduction was observed in the deep-rooted grassland.","ai_generated":true,"unit":"sei-000060#insight-2","date_modified":"2026-10-23"},{"text":"The drivers of CO2 flux variation differ by site: in forest and grassland ecosystems, soil temperatures primarily explain deep-collar (heterotrophic) variation and do not relate to root-derived (autotrophic) flux, whereas the opposite relationship exists in the peatland site.","ai_generated":true,"unit":"sei-000060#insight-3","date_modified":"2026-10-23"}],"climate_tags":[],"geography_discussed":[],"frame_perspective":[],"analysis_type":["experimental"]}]}