Volume 35, AMT-1 Cruise Report and Preliminary Results

This report documents the scientific activities on board the Royal Research Ship (RRS) 'James Clark Ross' during the irst Atlantic Meridional Transect (AMT-1), 21 September to 24 October 1995. The ship sailed from Grimsby (England) for Montevideo (Uruguay) and then continued on to Stanley (Falkland Islands). The primary objective of the AMT program is to investigate basic biological processes in the open Atlantic Ocean over very broad spatial scales. For AMT-1, the meridional range covered was approximately 50 deg N to 50 deg S or nearly 8,000 nmi. The measurements to be taken during the AMT cruises are fundamental for the calibration, validation, and continuing understanding of remotely sensed observations of biological oceanography. They are also important for understanding plankton community structure over latitudinal scales and the role of the world ocean in global carbon cycles. During AMT-1 a variety of instruments were used to map the physical, chemical, and biological structure of the upper 200 m of the water column. Ocean color measurements were made using state-of-the-art sensors, whose calibration was traceable to the highest international standards. New advances in fluorometry were used to measure photosynthetic activity, which was then used to further interpret primary productivity. A unique set of samples and data were collected for the planktonic assemblages that vary throughout the range of the transect. These data will yield new interpretations on community composition and their role in carbon cycling. While the various provinces of the Atlantic Ocean were being crossed, the partial pressure of CO2 was related to biological productivity. This comparison revealed the areas of drawdown of atmospheric CO2 and how these areas relate to the surrounding biological productivity. These data, plus the measurements of light attenuation and phytoplankton optical properties, will be used as a primary input for basin-scale biological productivity models to help develop ecosystem dynamics models which will be important for improving the forecasting abilities of modelers. The AMT program is also attempting to meet the needs of international agencies in their implementation of Sensor Intercomparison and Merger for Biological and Interdisciplinary Ocean Studies (SIMBIOS), a program to develop a methodology and operational capability to combine data products from the various ocean color satellite missions

Prospective Associations Between Emotion Regulation and Depressive Symptoms Among Mexican-Origin Adolescents

Reappraisal (reconstruing emotional experiences to alter their impact) and suppression (inhibiting emotionally expressive behavior) are emotion-regulation strategies with important implications for depression. While reappraisal generally predicts lower depressive symptoms, suppression generally predicts higher depressive symptoms. Because cultural factors can influence the processes involved in these links and because adolescence-especially for ethnic minority youth-brings particular emotional challenges, it's critical to investigate these links among Mexican-origin adolescents. However, research examining emotion regulation among Mexican-origin individuals is scarce and generally limited to cross-sectional designs. Thus, we examined prospective associations between reappraisal and suppression (assessed at age 17) and 2 facets of depressive symptoms (anhedonia and general distress) over 3 years (assessed at ages 16, 18, and 19) among 228 Mexican-origin adolescents. Latent growth curve models indicated that reappraisal was associated with lower anhedonia at baseline (age 16) and lower anhedonia over time, whereas suppression predicted greater anhedonia at baseline but not change over time. Consistent with the Mexican cultural value of simpatía, which emphasizes expressing positive emotions and inhibiting negative emotions, suppression of positive emotions was associated with greater anhedonia over time whereas suppression of negative emotions was associated with lower anhedonia over time. However, neither associated with anhedonia at baseline. Reappraisal and suppression were not associated with distress symptoms, and no effects were moderated by familism, household income, gender, or child nativity. The anhedonia results suggest that the benefits of reappraisal extend to Mexican-origin adolescents, but the effects of suppression may depend upon emotional valence in this group. (PsycInfo Database Record (c) 2022 APA, all rights reserved)