BES bird survey for Watershed 263, winter, 2012, survey summary. This dataset pairs with a file of same name containing the data (counts) for the survey.

This dataset is associated with BES Bird Monitoring Bird Monitoring Project: ================= The BES Bird Monitoring Project is a breeding bird survey designed to find out what birds are found in the breeding season in Baltimore and where. Our monitoring efforts will show associations among block group socioeconomic variables, land cover, land use, and habitat features with breeding bird abundance, to provide information for land managers on possible consequences of land use changes on bird communities. A distinguishing feature of the bird monitoring at BES LTER, relative to other urban bird work, is the capacity for long-term monitoring of features at multiple scales through links to other parts of the project. Different processes influence habitat for birds at different scales, e.g. ongoing household level human decision-making at lot scale vs. block or neighborhood scale abandonment/re-development. Our project seeks to understand how these processes impact bird occurrence, abundance, and composition differ at the lot, block and neighborhood scale. The data consists of four major elements, Sites, Surveys, Taxalist, and Birds. Sites records the sites and their characteristics. Surveys describe the actual outings or sampling sessions. They describe the weather, the temperature, the sites visited. Taxalist provides the integration of speciaies abbreviations and common names, and Birds describes the actual sightings, linking to the other three tables. Attribute information: Here are the fields Surveys: site_id FK->Sites[site_id] survey_id survey_date time_start time_end observer wind_speed wind_dir air_temp temp_units cloud_cover notes Sites: site_id park_code park_district park_name point_code point_location park_acreage Taxalist: species_id common_name Birds: survey_id FK->surveys[survey_id] site_id FK->surveys[site_id] species_id FK->taxalist[species_id] distance bird_count notes seen heard direction time_class本数据集关联于BES鸟类监测项目（BES Bird Monitoring Project）。 BES鸟类监测项目是一项繁殖鸟类调查项目，旨在探明巴尔的摩地区繁殖季的鸟类物种组成与分布地点。本监测工作将分析街区群社会经济变量、土地覆被、土地利用及栖息地特征与繁殖鸟类丰度之间的关联，为土地管理者提供土地利用变化对鸟类群落潜在影响的参考依据。 相较于其他城市鸟类研究，BES LTER的鸟类监测的独特优势在于，可通过与项目其他模块的联动，实现多尺度栖息地的长期监测。不同生态过程会在不同空间尺度上影响鸟类栖息地：例如地块尺度上的家庭级人类决策行为，与街区或社区尺度上的土地废弃/再开发进程。本项目旨在厘清这些过程如何在地块、街区及社区尺度上，对鸟类的出现概率、种群丰度及群落组成产生差异化影响。 本数据集包含四大核心模块：Sites（调查点位）、Surveys（采样调查）、Taxalist（物种名录）及Birds（鸟类观测记录）。 1. Sites（调查点位）：记录各监测点位及其基础特征信息，其字段包括：site_id、park_code、park_district、park_name、point_code、point_location、park_acreage。 2. Surveys（采样调查）：描述实际野外调查或采样行程，涵盖调查天气、气温、到访点位等信息，其字段包括：site_id（外键，关联Sites表的site_id字段）、survey_id、survey_date、time_start、time_end、observer、wind_speed、wind_dir、air_temp、temp_units、cloud_cover、notes。 3. Taxalist（物种名录）：整合物种缩写与通用名称，其字段包括：species_id、common_name。 4. Birds（鸟类观测记录）：记录实际观测到的鸟类信息，与上述三个模块建立关联，其字段包括：survey_id（外键，关联Surveys表的survey_id字段）、site_id（外键，关联Surveys表的site_id字段）、species_id（外键，关联Taxalist表的species_id字段）、distance、bird_count、notes、seen、heard、direction、time_class。